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Atlas Vector Search Quick Start

On this page

  • Objectives
  • Create a Vector Search Index
  • Run a Vector Search Query
  • Learning Summary
  • Next Steps

This quick start describes how to load sample documents that contain vector embeddings into an Atlas cluster or local Atlas deployment, create an Atlas Vector Search index on those embeddings, and then perform semantic search to return documents that are similar to your query.

Time required: 15 minutes

In this quick start, you will do the following steps:

  1. Create an index definition for the sample_mflix.embedded_movies collection that indexes the plot_embedding field as the vector type. The plot_embedding field contains embeddings created using OpenAI's text-embedding-ada-002 embedding model. The index definition specifies 1536 vector dimensions and measures similarity using dotProduct.

  2. Run an Atlas Vector Search query that searches the sample sample_mflix.embedded_movies collection. The query uses the $vectorSearch stage to search the plot_embedding field, which contains embeddings created using OpenAI's text-embedding-ada-002 embedding model. The query searches the plot_embedding field using vector embeddings for the string time travel. It considers up to 150 nearest neighbors, and returns 10 documents in the results.

To learn more, see Learning Summary.

In this section, you create an Atlas Vector Search index on sample data that you load into an Atlas cluster or a deployment hosted on your local computer:

1
  1. Create a free Atlas account or sign in to an existing account.

  2. If you don't yet have an Atlas cluster, create a free M0 cluster. To learn more about creating an Atlas cluster, see Create a Cluster.

    Note

    If you are working with an existing cluster, you must have Project Data Access Admin or higher access to your Atlas project.

    If you create a new cluster, you have the necessary permissions by default.

    You can create only one M0 Free cluster per project.

  3. In the left sidebar, click Atlas Search. Choose your cluster from the Select data source menu and click Go to Atlas Search.

  4. If you haven't yet loaded the sample dataset onto your cluster, click Load a Sample Dataset. In the Load Sample Dataset dialog box, click Load Sample Dataset to confirm.

    If you already loaded the sample dataset, check that the sample_mflix database contains the embedded_movies collection. If it doesn't, drop the sample databases and reload the sample dataset.

    Loading the sample dataset can take several minutes to complete.

2
  1. When the sample data finishes loading, click Create Search Index.

  2. Under the Atlas Vector Search section, select the JSON Editor and click Next.

  3. In the Database and Collection section, expand the sample_mflix database and select the embedded_movies collection.

    Each document in this collection contains information about a movie, including a summary of the movie's plot as a string, which has also been converted to and stored as a vector embedding in the document's plot_embedding field.

  4. In the Index Name field, specify vector_index.

  5. Copy and paste the following vector search index definition into the JSON Editor.

    1{
    2 "fields": [{
    3 "type": "vector",
    4 "path": "plot_embedding",
    5 "numDimensions": 1536,
    6 "similarity": "dotProduct"
    7 }]
    8}

    This index definition:

  6. Click Next.

  7. Click Create Search Index.

    The index should take about one minute to build. When your vector index is finished building, the Status column reads Active.

1
  1. Install the Atlas CLI and MongoDB Database Tools.

    If you use Homebrew, you can run the following commands in your terminal:

    brew install mongodb-atlas-cli
    brew tap mongodb/brew && brew install mongodb-database-tools
  2. Install Docker.

For detailed instructions, see Prerequisites.

2
  1. If you don't have an existing Atlas account, run atlas setup in your terminal or create a new account.

  2. In your terminal, run atlas auth login to authenticate with your Atlas login credentials. To learn more, see Connect from the Atlas CLI.

  3. Run atlas deployments setup and follow the prompts to create a local deployment. When prompted to connect to the deployment, select skip.

    For detailed instructions, see Create a Local Atlas Deployment.

3
  1. Run the following command in your terminal to download the sample data:

    curl https://atlas-education.s3.amazonaws.com/sampledata.archive -o sampledata.archive
  2. Run the following command to load the data into your deployment, replacing <port-number> with the port where you're hosting the deployment:

    mongorestore --archive=sampledata.archive --port=<port-number>
4
  1. Create a file named vector-index.json

  2. Copy and paste the following index definition into the JSON file.

    {
    "database": "sample_mflix",
    "collectionName": "embedded_movies",
    "type": "vectorSearch",
    "name": "vector_index",
    "fields": [
    {
    "type": "vector",
    "path": "plot_embedding",
    "numDimensions": 1536,
    "similarity": "dotProduct"
    }
    ]
    }

    This index definition:

  3. Save the file, and then run the following command in your terminal, replacing <path-to-file> with the path to the vector-index.json file that you created.

    atlas deployments search indexes create --file <path-to-file>

In this section, you run a sample vector search query on your indexed embeddings.


➤ To set the client you use to run the examples in this section, use the Select your language drop-down menu in the right navigation pane of this page.


1
2
  1. Expand sample_mflix under the list of databases and select embedded_movies from the list of collections in that database.

  2. Click the Aggregation tab for the sample_mflix.embedded_movies collection.

3
  1. In the aggregation pipeline pane, click the </> Text toggle to enable text mode for pipeline editing.

  2. Copy and paste the following sample query into the text editor.

    This query searches for documents that include text in the plot field that is semantically related to the term "time travel".

1[
2 {
3 "$vectorSearch": {
4 "index": "vector_index",
5 "path": "plot_embedding",
6 "queryVector": 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1{
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3 "plot": "A reporter, learning of time travelers visiting 20th century disasters, tries to change the history they know by averting upcoming disasters.",
4 "title": "Thrill Seekers"
5}
6{
7 "plot": "At the age of 21, Tim discovers he can travel in time and change what happens and has happened in his own life. His decision to make his world a better place by getting a girlfriend turns out not to be as easy as you might think.",
8 "title": "About Time",
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11{
12 "plot": "Hoping to alter the events of the past, a 19th century inventor instead travels 800,000 years into the future, where he finds humankind divided into two warring races.",
13 "title": "The Time Machine",
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16{
17 "plot": "After using his mother's newly built time machine, Dolf gets stuck involuntary in the year 1212. He ends up in a children's crusade where he confronts his new friends with modern techniques...",
18 "title": "Crusade in Jeans",
19 "score": 0.9290417432785034
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21{
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24 "plot": "An officer for a security agency that regulates time travel, must fend for his life against a shady politician who has a tie to his past."
25}
26{
27 "plot": "A time-travel experiment in which a robot probe is sent from the year 2073 to the year 1973 goes terribly wrong thrusting one of the project scientists, a man named Nicholas Sinclair into a...",
28 "title": "A.P.E.X.",
29 "score": 0.9266218543052673
30}
31{
32 "plot": "Agent J travels in time to M.I.B.'s early days in 1969 to stop an alien from assassinating his friend Agent K and changing history.",
33 "title": "Men in Black 3",
34 "score": 0.9258455038070679
35}
36{
37 "score": 0.9240515828132629,
38 "plot": "Bound by a shared destiny, a teen bursting with scientific curiosity and a former boy-genius inventor embark on a mission to unearth the secrets of a place somewhere in time and space that exists in their collective memory.",
39 "title": "Tomorrowland"
40}
41{
42 "plot": "With the help of his uncle, a man travels to the future to try and bring his girlfriend back to life.",
43 "title": "Love Story 2050",
44 "score": 0.923175573348999
45}
46{
47 "plot": "A dimension-traveling wizard gets stuck in the 21st century because cell-phone radiation interferes with his magic. With his home world on the brink of war, he seeks help from a jaded ...",
48 "title": "The Portal",
49 "score": 0.9228089451789856
50}

This query uses the $vectorSearch stage to:

  • Compare vector embeddings of the search term against vector embeddings of movie plots in the plot_embedding field of the sample_mflix.embedded_moves collection.

  • Consider up to the 150 most similar movie plots and return the top 10 results.

It uses the $project stage to:

  • Only include the movie plot and title fields in the results.

  • Add a score field to show the relevance of each result to the search term.

The Pipeline Output pane displays the results of your query.

To learn more about this pipeline stage, see Run Vector Search Queries.

1
2

Open mongosh in a terminal window and connect to your Atlas cluster. For detailed instructions on connecting, see Connect via mongosh.

In a terminal window, run atlas deployments connect and follow the prompts to connect to your local Atlas deployment via mongosh. For detailed instructions on connecting, see Manage a Local Atlas Deployment.

3
use sample_mflix
switched to db sample_mflix
4
  1. Copy and paste the following sample query into your terminal and then run it using mongosh. mongosh might lag slightly when you paste in the query due to the number of characters in the vector embedding.

    This query searches for documents that include text in the plot field that is semantically related to the term "time travel".

1db.embedded_movies.aggregate([
2 {
3 "$vectorSearch": {
4 "index": "vector_index",
5 "path": "plot_embedding",
6 "queryVector": 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1[
2 {
3 plot: 'A reporter, learning of time travelers visiting 20th century disasters, tries to change the history they know by averting upcoming disasters.',
4 title: 'Thrill Seekers',
5 score: 0.7892671227455139
6 },
7 {
8 plot: 'At the age of 21, Tim discovers he can travel in time and change what happens and has happened in his own life. His decision to make his world a better place by getting a girlfriend turns out not to be as easy as you might think.',
9 title: 'About Time',
10 score: 0.7843604683876038
11 },
12 {
13 plot: 'Hoping to alter the events of the past, a 19th century inventor instead travels 800,000 years into the future, where he finds humankind divided into two warring races.',
14 title: 'The Time Machine',
15 score: 0.7801066637039185
16 },
17 {
18 plot: "After using his mother's newly built time machine, Dolf gets stuck involuntary in the year 1212. He ends up in a children's crusade where he confronts his new friends with modern techniques...",
19 title: 'Crusade in Jeans',
20 score: 0.7789170742034912
21 },
22 {
23 plot: 'An officer for a security agency that regulates time travel, must fend for his life against a shady politician who has a tie to his past.',
24 title: 'Timecop',
25 score: 0.7771612405776978
26 },
27 {
28 plot: 'A time-travel experiment in which a robot probe is sent from the year 2073 to the year 1973 goes terribly wrong thrusting one of the project scientists, a man named Nicholas Sinclair into a...',
29 title: 'A.P.E.X.',
30 score: 0.7730885744094849
31 },
32 {
33 plot: "Agent J travels in time to M.I.B.'s early days in 1969 to stop an alien from assassinating his friend Agent K and changing history.",
34 title: 'Men in Black 3',
35 score: 0.7712380886077881
36 },
37 {
38 plot: 'Bound by a shared destiny, a teen bursting with scientific curiosity and a former boy-genius inventor embark on a mission to unearth the secrets of a place somewhere in time and space that exists in their collective memory.',
39 title: 'Tomorrowland',
40 score: 0.7669923901557922
41 },
42 {
43 plot: 'With the help of his uncle, a man travels to the future to try and bring his girlfriend back to life.',
44 title: 'Love Story 2050',
45 score: 0.7649372816085815
46 },
47 {
48 plot: 'A dimension-traveling wizard gets stuck in the 21st century because cell-phone radiation interferes with his magic. With his home world on the brink of war, he seeks help from a jaded ...',
49 title: 'The Portal',
50 score: 0.7640786170959473
51 }
52]

This query uses the $vectorSearch stage to:

  • Compare vector embeddings of the search term against vector embeddings of movie plots in the plot_embedding field of the sample_mflix.embedded_moves collection.

  • Consider up to the 150 most similar movie plots and return the top 10 results.

It uses the $project stage to:

  • Only include the movie plot and title fields in the results.

  • Add a score field to show the relevance of each result to the search term.

To learn more about this pipeline stage, see Run Vector Search Queries.

1

For detailed installation instructions, refer to the MongoDB C Driver documentation.

2

This query searches for documents that include text in the plot field that is semantically related to the term "time travel".

  1. Create a file named atlas-vector-search-quick-start.c and copy and paste the following sample query into the file:

    1#include <bson/bson.h>
    2#include <mongoc/mongoc.h>
    3#include <stdio.h>
    4
    5int main(void) {
    6
    7 mongoc_client_t *client;
    8 mongoc_collection_t *collection;
    9 mongoc_cursor_t *cursor;
    10 bson_array_builder_t *builder;
    11 bson_t *pipeline;
    12 bson_t query_vector;
    13 bson_error_t error;
    14 const bson_t *doc;
    15 char *str;
    16
    17 int arrSize = 1536; // This collection has a vector array of 1536 dimensions; depending on your vector embedding model, this mary vary
    18 double embeddings[] = 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    19
    20 // Initialize the MongoDB C Driver
    21 mongoc_init();
    22
    23 // Connect to your Atlas collection
    24 client = mongoc_client_new("<connection-string>");
    25 collection = mongoc_client_get_collection (client, "sample_mflix", "embedded_movies");
    26
    27 // Build query vector array
    28 builder = bson_array_builder_new();
    29
    30 for(int i = 0; i < arrSize; i++){
    31 bson_array_builder_append_double(builder, embeddings[i]);
    32 }
    33
    34 bson_array_builder_build(builder, &query_vector);
    35 bson_array_builder_destroy(builder);
    36
    37 // Create aggregation pipeline for Vector Search
    38 pipeline = BCON_NEW(
    39 "pipeline",
    40 "[",
    41 "{",
    42 "$vectorSearch", "{",
    43 "index", "vector_index",
    44 "path", "plot_embedding",
    45 "queryVector", BCON_ARRAY(&query_vector),
    46 "numCandidates", BCON_INT32(150),
    47 "limit", BCON_INT32(10),
    48 "}",
    49 "}",
    50 "{",
    51 "$project", "{",
    52 "title", BCON_BOOL(true),
    53 "plot", BCON_BOOL(true),
    54 "_id", BCON_BOOL(false),
    55 "score", "{",
    56 "$meta", "vectorSearchScore",
    57 "}",
    58 "}",
    59 "}",
    60 "]"
    61 );
    62
    63 // Run query
    64 cursor = mongoc_collection_aggregate(collection, MONGOC_QUERY_NONE, pipeline, NULL, NULL );
    65
    66 // Print results
    67 while (mongoc_cursor_next (cursor, &doc)) {
    68 str = bson_as_canonical_extended_json (doc, NULL);
    69 printf ("%s\n", str);
    70 bson_free (str);
    71 }
    72
    73 // Cleanup
    74 bson_destroy(pipeline);
    75 mongoc_cursor_destroy(cursor);
    76 mongoc_collection_destroy(collection);
    77 mongoc_client_destroy(client);
    78 mongoc_cleanup();
    79
    80 return 0;
    81}

    This query uses the $vectorSearch stage to:

    • Compare vector embeddings of the search term against vector embeddings of movie plots in the plot_embedding field of the sample_mflix.embedded_moves collection.

    • Consider up to the 150 most similar movie plots and return the top 10 results.

    It uses the $project stage to:

    • Only include the movie plot and title fields in the results.

    • Add a score field to show the relevance of each result to the search term.

3
  1. Replace <connection-string> with the connection string for your Atlas cluster or local deployment.

    Your connection string should use the following format:

    mongodb+srv://<db_username>:<db_password>@<clusterName>.<hostname>.mongodb.net

    Ensure that your connection string includes your database user's credentials. To learn more about finding your connection string, see Connect via Drivers.

    Your connection string should use the following format:

    mongodb://localhost:<port-number>/?directConnection=true
  2. Save the file.

4
  1. In your project directory, create a file named CMakeLists.txt and copy the following code into the file.

    cmake_minimum_required(VERSION 3.30)
    project(atlas-vector-search-quick-start)
    # Specify the minimum version you require.
    find_package (mongoc-1.0 1.27.6 REQUIRED)
    add_executable(atlas-vector-search-quick-start
    atlas-vector-search-quick-start.c
    )
    # The "atlas-vector-search-quick-start.c" sample program is shared among four tests.
    target_link_libraries (atlas-vector-search-quick-start PRIVATE mongo::mongoc_shared)
  2. Create a directory in your project folder called build.

    mkdir build
  3. Enter the build directory and run the cmake command to create your Makefile.

    cd build
    cmake ../
5

From your build directory, compile and run the atlas-vector-search-quick-start.c file.

cmake --build .
./atlas-vector-search-quick-start
1{ "plot" : "A reporter, learning of time travelers visiting 20th century disasters, tries to change the history they know by averting upcoming disasters.", "title" : "Thrill Seekers", "score" : { "$numberDouble" : "0.78926712274551391602" } }
2{ "plot" : "At the age of 21, Tim discovers he can travel in time and change what happens and has happened in his own life. His decision to make his world a better place by getting a girlfriend turns out not to be as easy as you might think.", "title" : "About Time", "score" : { "$numberDouble" : "0.78436046838760375977" } }
3{ "plot" : "Hoping to alter the events of the past, a 19th century inventor instead travels 800,000 years into the future, where he finds humankind divided into two warring races.", "title" : "The Time Machine", "score" : { "$numberDouble" : "0.78010666370391845703" } }
4{ "plot" : "After using his mother's newly built time machine, Dolf gets stuck involuntary in the year 1212. He ends up in a children's crusade where he confronts his new friends with modern techniques...", "title" : "Crusade in Jeans", "score" : { "$numberDouble" : "0.77891707420349121094" } }
5{ "plot" : "An officer for a security agency that regulates time travel, must fend for his life against a shady politician who has a tie to his past.", "title" : "Timecop", "score" : { "$numberDouble" : "0.77716124057769775391" } }
6{ "plot" : "A time-travel experiment in which a robot probe is sent from the year 2073 to the year 1973 goes terribly wrong thrusting one of the project scientists, a man named Nicholas Sinclair into a...", "title" : "A.P.E.X.", "score" : { "$numberDouble" : "0.77308857440948486328" } }
7{ "plot" : "Agent J travels in time to M.I.B.'s early days in 1969 to stop an alien from assassinating his friend Agent K and changing history.", "title" : "Men in Black 3", "score" : { "$numberDouble" : "0.77123808860778808594" } }
8{ "plot" : "Bound by a shared destiny, a teen bursting with scientific curiosity and a former boy-genius inventor embark on a mission to unearth the secrets of a place somewhere in time and space that exists in their collective memory.", "title" : "Tomorrowland", "score" : { "$numberDouble" : "0.76699239015579223633" } }
9{ "plot" : "With the help of his uncle, a man travels to the future to try and bring his girlfriend back to life.", "title" : "Love Story 2050", "score" : { "$numberDouble" : "0.76493728160858154297" } }
10{ "plot" : "A dimension-traveling wizard gets stuck in the 21st century because cell-phone radiation interferes with his magic. With his home world on the brink of war, he seeks help from a jaded ...", "title" : "The Portal", "score" : { "$numberDouble" : "0.76407861709594726562" } }
1
  1. Install the C++ Driver. For detailed installation instructions, refer to the MongoDB C++ Driver documentation.

  2. Create a new directory called query-quick-start.

    mkdir query-quick-start

    Enter the directory, and create a CMakeLists.txt file.

    cd query-quick-start
    touch CMakeLists.txt

    Copy and paste the following lines into the CMakeLists.txt file:

    cmake_minimum_required(VERSION 3.30)
    project(query_quick_start)
    set(CMAKE_CXX_STANDARD 17)
    find_package(mongocxx REQUIRED)
    find_package(bsoncxx REQUIRED)
    add_executable(query_quick_start
    atlas_vector_search_quick_start.cpp
    )
    target_link_libraries(query_quick_start PRIVATE mongo::mongocxx_shared)
    target_link_libraries(query_quick_start PRIVATE mongo::bsoncxx_shared)
2

This query searches for documents that include text in the plot field that is semantically related to the term "time travel".

  1. Create a file named atlas_vector_search_quick_start.cpp .

  2. Copy and paste the following sample query into the atlas_vector_search_quick_start.cpp file:

    1#include <bsoncxx/builder/basic/document.hpp>
    2#include <bsoncxx/builder/list.hpp>
    3#include <bsoncxx/json.hpp>
    4#include <mongocxx/client.hpp>
    5#include <mongocxx/instance.hpp>
    6#include <mongocxx/uri.hpp>
    7
    8using bsoncxx::builder::basic::kvp;
    9using bsoncxx::builder::basic::make_document;
    10
    11int main() {
    12 try {
    13 mongocxx::instance inst{};
    14
    15 // Replace the placeholder with your Atlas connection string
    16 const auto uri = mongocxx::uri{"<connection-string>"};
    17
    18 // Connect to your Atlas cluster
    19 auto client = mongocxx::client{uri};
    20 auto db = client["sample_mflix"];
    21 auto collection = db["embedded_movies"];
    22
    23 // Define vector embeddings to search
    24 auto vectors = bsoncxx::builder::list{
    25 -0.0016261312, -0.028070757, -0.011342932, -0.012775794, -0.0027440966, 0.008683807, -0.02575152, -0.02020668, -0.010283281, -0.0041719596, 0.021392956, 0.028657231, -0.006634482, 0.007490867, 0.018593878, 0.0038187427, 0.029590257, -0.01451522, 0.016061379, 0.00008528442, -0.008943722, 0.01627464, 0.024311995, -0.025911469, 0.00022596726, -0.008863748, 0.008823762, -0.034921836, 0.007910728, -0.01515501, 0.035801545, -0.0035688248, -0.020299982, -0.03145631, -0.032256044, -0.028763862, -0.0071576433, -0.012769129, 0.012322609, -0.006621153, 0.010583182, 0.024085402, -0.001623632, 0.007864078, -0.021406285, 0.002554159, 0.012229307, -0.011762793, 0.0051682983, 0.0048484034, 0.018087378, 0.024325324, -0.037694257, -0.026537929, -0.008803768, -0.017767483, -0.012642504, -0.0062712682, 0.0009771782, -0.010409906, 0.017754154, -0.004671795, -0.030469967, 0.008477209, -0.005218282, -0.0058480743, -0.020153364, -0.0032805866, 0.004248601, 0.0051449724, 0.006791097, 0.007650814, 0.003458861, -0.0031223053, -0.01932697, -0.033615597, 0.00745088, 0.006321252, -0.0038154104, 0.014555207, 0.027697546, -0.02828402, 0.0066711367, 0.0077107945, 0.01794076, 0.011349596, -0.0052715978, 0.014755142, -0.019753495, -0.011156326, 0.011202978, 0.022126047, 0.00846388, 0.030549942, -0.0041386373, 0.018847128, -0.00033655585, 0.024925126, -0.003555496, -0.019300312, 0.010749794, 0.0075308536, -0.018287312, -0.016567878, -0.012869096, -0.015528221, 0.0078107617, -0.011156326, 0.013522214, -0.020646535, -0.01211601, 0.055928253, 0.011596181, -0.017247654, 0.0005939711, -0.026977783, -0.003942035, -0.009583511, -0.0055248477, -0.028737204, 0.023179034, 0.003995351, 0.0219661, -0.008470545, 0.023392297, 0.010469886, -0.015874773, 0.007890735, -0.009690142, -0.00024970944, 0.012775794, 0.0114762215, 0.013422247, 0.010429899, -0.03686786, -0.006717788, -0.027484283, 0.011556195, -0.036068123, -0.013915418, -0.0016327957, 0.0151016945, -0.020473259, 0.004671795, -0.012555866, 0.0209531, 0.01982014, 0.024485271, 0.0105431955, -0.005178295, 0.033162415, -0.013795458, 0.007150979, 0.010243294, 0.005644808, 0.017260984, -0.0045618312, 0.0024725192, 0.004305249, -0.008197301, 0.0014203656, 0.0018460588, 0.005015015, -0.011142998, 0.01439526, 0.022965772, 0.02552493, 0.007757446, -0.0019726837, 0.009503538, -0.032042783, 0.008403899, -0.04609149, 0.013808787, 0.011749465, 0.036388017, 0.016314628, 0.021939443, -0.0250051, -0.017354285, -0.012962398, 0.00006107364, 0.019113706, 0.03081652, -0.018114036, -0.0084572155, 0.009643491, -0.0034721901, 0.0072642746, -0.0090636825, 0.01642126, 0.013428912, 0.027724205, 0.0071243206, -0.6858542, -0.031029783, -0.014595194, -0.011449563, 0.017514233, 0.01743426, 0.009950057, 0.0029706885, -0.015714826, -0.001806072, 0.011856096, 0.026444625, -0.0010663156, -0.006474535, 0.0016161345, -0.020313311, 0.0148351155, -0.0018393943, 0.0057347785, 0.018300641, -0.018647194, 0.03345565, -0.008070676, 0.0071443142, 0.014301958, 0.0044818576, 0.003838736, -0.007350913, -0.024525259, -0.001142124, -0.018620536, 0.017247654, 0.007037683, 0.010236629, 0.06046009, 0.0138887605, -0.012122675, 0.037694257, 0.0055081863, 0.042492677, 0.00021784494, -0.011656162, 0.010276617, 0.022325981, 0.005984696, -0.009496873, 0.013382261, -0.0010563189, 0.0026507939, -0.041639622, 0.008637156, 0.026471283, -0.008403899, 0.024858482, -0.00066686375, -0.0016252982, 0.027590916, 0.0051449724, 0.0058647357, -0.008743787, -0.014968405, 0.027724205, -0.011596181, 0.0047650975, -0.015381602, 0.0043718936, 0.002159289, 0.035908177, -0.008243952, -0.030443309, 0.027564257, 0.042625964, -0.0033688906, 0.01843393, 0.019087048, 0.024578573, 0.03268257, -0.015608194, -0.014128681, -0.0033538956, -0.0028757197, -0.004121976, -0.032389335, 0.0034322033, 0.058807302, 0.010943064, -0.030523283, 0.008903735, 0.017500903, 0.00871713, -0.0029406983, 0.013995391, -0.03132302, -0.019660193, -0.00770413, -0.0038853872, 0.0015894766, -0.0015294964, -0.006251275, -0.021099718, -0.010256623, -0.008863748, 0.028550599, 0.02020668, -0.0012962399, -0.003415542, -0.0022509254, 0.0119360695, 0.027590916, -0.046971202, -0.0015194997, -0.022405956, 0.0016677842, -0.00018535563, -0.015421589, -0.031802863, 0.03814744, 0.0065411795, 0.016567878, -0.015621523, 0.022899127, -0.011076353, 0.02841731, -0.002679118, -0.002342562, 0.015341615, 0.01804739, -0.020566562, -0.012989056, -0.002990682, 0.01643459, 0.00042527664, 0.008243952, -0.013715484, -0.004835075, -0.009803439, 0.03129636, -0.021432944, 0.0012087687, -0.015741484, -0.0052016205, 0.00080890034, -0.01755422, 0.004811749, -0.017967418, -0.026684547, -0.014128681, 0.0041386373, -0.013742141, -0.010056688, -0.013268964, -0.0110630235, -0.028337335, 0.015981404, -0.00997005, -0.02424535, -0.013968734, -0.028310679, -0.027750863, -0.020699851, 0.02235264, 0.001057985, 0.00081639783, -0.0099367285, 0.013522214, -0.012016043, -0.00086471526, 0.013568865, 0.0019376953, -0.019020405, 0.017460918, -0.023045745, 0.008503866, 0.0064678704, -0.011509543, 0.018727167, -0.003372223, -0.0028690554, -0.0027024434, -0.011902748, -0.012182655, -0.015714826, -0.0098634185, 0.00593138, 0.018753825, 0.0010146659, 0.013029044, 0.0003521757, -0.017620865, 0.04102649, 0.00552818, 0.024485271, -0.009630162, -0.015608194, 0.0006718621, -0.0008418062, 0.012395918, 0.0057980907, 0.016221326, 0.010616505, 0.004838407, -0.012402583, 0.019900113, -0.0034521967, 0.000247002, -0.03153628, 0.0011038032, -0.020819811, 0.016234655, -0.00330058, -0.0032289368, 0.00078973995, -0.021952773, -0.022459272, 0.03118973, 0.03673457, -0.021472929, 0.0072109587, -0.015075036, 0.004855068, -0.0008151483, 0.0069643734, 0.010023367, -0.010276617, -0.023019087, 0.0068244194, -0.0012520878, -0.0015086699, 0.022046074, -0.034148756, -0.0022192693, 0.002427534, -0.0027124402, 0.0060346797, 0.015461575, 0.0137554705, 0.009230294, -0.009583511, 0.032629255, 0.015994733, -0.019167023, -0.009203636, 0.03393549, -0.017274313, -0.012042701, -0.0009930064, 0.026777849, -0.013582194, -0.0027590916, -0.017594207, -0.026804507, -0.0014236979, -0.022032745, 0.0091236625, -0.0042419364, -0.00858384, -0.0033905501, -0.020739838, 0.016821127, 0.022539245, 0.015381602, 0.015141681, 0.028817179, -0.019726837, -0.0051283115, -0.011489551, -0.013208984, -0.0047017853, -0.0072309524, 0.01767418, 0.0025658219, -0.010323267, 0.012609182, -0.028097415, 0.026871152, -0.010276617, 0.021912785, 0.0022542577, 0.005124979, -0.0019710176, 0.004518512, -0.040360045, 0.010969722, -0.0031539614, -0.020366628, -0.025778178, -0.0110030435, -0.016221326, 0.0036587953, 0.016207997, 0.003007343, -0.0032555948, 0.0044052163, -0.022046074, -0.0008822095, -0.009363583, 0.028230704, -0.024538586, 0.0029840174, 0.0016044717, -0.014181997, 0.031349678, -0.014381931, -0.027750863, 0.02613806, 0.0004136138, -0.005748107, -0.01868718, -0.0010138329, 0.0054348772, 0.010703143, -0.003682121, 0.0030856507, -0.004275259, -0.010403241, 0.021113047, -0.022685863, -0.023032416, 0.031429652, 0.001792743, -0.005644808, -0.011842767, -0.04078657, -0.0026874484, 0.06915057, -0.00056939584, -0.013995391, 0.010703143, -0.013728813, -0.022939114, -0.015261642, -0.022485929, 0.016807798, 0.007964044, 0.0144219175, 0.016821127, 0.0076241563, 0.005461535, -0.013248971, 0.015301628, 0.0085171955, -0.004318578, 0.011136333, -0.0059047225, -0.010249958, -0.018207338, 0.024645219, 0.021752838, 0.0007614159, -0.013648839, 0.01111634, -0.010503208, -0.0038487327, -0.008203966, -0.00397869, 0.0029740208, 0.008530525, 0.005261601, 0.01642126, -0.0038753906, -0.013222313, 0.026537929, 0.024671877, -0.043505676, 0.014195326, 0.024778508, 0.0056914594, -0.025951454, 0.017620865, -0.0021359634, 0.008643821, 0.021299653, 0.0041686273, -0.009017031, 0.04044002, 0.024378639, -0.027777521, -0.014208655, 0.0028623908, 0.042119466, 0.005801423, -0.028124074, -0.03129636, 0.022139376, -0.022179363, -0.04067994, 0.013688826, 0.013328944, 0.0046184794, -0.02828402, -0.0063412455, -0.0046184794, -0.011756129, -0.010383247, -0.0018543894, -0.0018593877, -0.00052024535, 0.004815081, 0.014781799, 0.018007403, 0.01306903, -0.020433271, 0.009043689, 0.033189073, -0.006844413, -0.019766824, -0.018767154, 0.00533491, -0.0024575242, 0.018727167, 0.0058080875, -0.013835444, 0.0040719924, 0.004881726, 0.012029372, 0.005664801, 0.03193615, 0.0058047553, 0.002695779, 0.009290274, 0.02361889, 0.017834127, 0.0049017193, -0.0036388019, 0.010776452, -0.019793482, 0.0067777685, -0.014208655, -0.024911797, 0.002385881, 0.0034988478, 0.020899786, -0.0025858153, -0.011849431, 0.033189073, -0.021312982, 0.024965113, -0.014635181, 0.014048708, -0.0035921505, -0.003347231, 0.030869836, -0.0017161017, -0.0061346465, 0.009203636, -0.025165047, 0.0068510775, 0.021499587, 0.013782129, -0.0024475274, -0.0051149824, -0.024445284, 0.006167969, 0.0068844, -0.00076183246, 0.030150073, -0.0055948244, -0.011162991, -0.02057989, -0.009703471, 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    26 };
    27
    28 // Define the pipeline with vectorSearch query options
    29 mongocxx::pipeline stages;
    30
    31 stages
    32 .append_stage(make_document(
    33 kvp("$vectorSearch",
    34 make_document(kvp("index", "vector_index"),
    35 kvp("path", "plot_embedding"),
    36 kvp("queryVector", vectors),
    37 kvp("numCandidates", 150), kvp("limit", 10)))))
    38 .project(make_document(
    39 kvp("_id", 0), kvp("plot", 1), kvp("title", 1),
    40 kvp("score", make_document(kvp("$meta", "vectorSearchScore")))));
    41
    42 auto cursor = collection.aggregate(stages);
    43
    44 for (auto&& doc : cursor) {
    45 std::cout << bsoncxx::to_json(doc) << std::endl;
    46 }
    47 } catch (const std::exception& e) {
    48 std::cout << "Exception: " << e.what() << std::endl;
    49 }
    50 return 0;
    51}

This query uses the $vectorSearch stage to:

  • Compare vector embeddings of the search term against vector embeddings of movie plots in the plot_embedding field of the sample_mflix.embedded_moves collection.

  • Consider up to the 150 most similar movie plots and return the top 10 results.

It uses the $project stage to:

  • Only include the movie plot and title fields in the results.

  • Add a score field to show the relevance of each result to the search term.

To learn more about this pipeline stage, see Run Vector Search Queries.

3
  1. Replace <connection-string> with the connection string for your Atlas cluster or local deployment.

    Your connection string should use the following format:

    mongodb+srv://<db_username>:<db_password>@<clusterName>.<hostname>.mongodb.net

    Ensure that your connection string includes your database user's credentials. To learn more about finding your connection string, see Connect via Drivers.

    Your connection string should use the following format:

    mongodb://localhost:<port-number>/?directConnection=true
  2. Save the file.

4
  1. Create and enter the /build directory:

    mkdir build && cd build
  2. Prepare the project.

    cmake ../
  3. Build the app.

    cmake --build .
  4. Execute the app to run the query.

    ./query_quick_start
    1'{"plot":"A reporter, learning of time travelers visiting 20th century disasters, tries to change the history they know by averting upcoming disasters.","title":"Thrill Seekers","score":0.7892671227455139}'
    2'{"plot":"At the age of 21, Tim discovers he can travel in time and change what happens and has happened in his own life. His decision to make his world a better place by getting a girlfriend turns out not to be as easy as you might think.","title":"About Time","score":0.7843604683876038}'
    3'{"plot":"Hoping to alter the events of the past, a 19th century inventor instead travels 800,000 years into the future, where he finds humankind divided into two warring races.","title":"The Time Machine","score":0.7801066637039185}'
    4`{"plot":"After using his mother's newly built time machine, Dolf gets stuck involuntary in the year 1212. He ends up in a children's crusade where he confronts his new friends with modern techniques...","title":"Crusade in Jeans","score":0.7789170742034912}`
    5'{"plot":"An officer for a security agency that regulates time travel, must fend for his life against a shady politician who has a tie to his past.","title":"Timecop","score":0.7771612405776978}'
    6'{"plot":"A time-travel experiment in which a robot probe is sent from the year 2073 to the year 1973 goes terribly wrong thrusting one of the project scientists, a man named Nicholas Sinclair into a...","title":"A.P.E.X.","score":0.7730885744094849}'
    7`{"plot":"Agent J travels in time to M.I.B.'s early days in 1969 to stop an alien from assassinating his friend Agent K and changing history.","title":"Men in Black 3","score":0.7712380886077881}`
    8'{"plot":"Bound by a shared destiny, a teen bursting with scientific curiosity and a former boy-genius inventor embark on a mission to unearth the secrets of a place somewhere in time and space that exists in their collective memory.","title":"Tomorrowland","score":0.7669923901557922}'
    9'{"plot":"With the help of his uncle, a man travels to the future to try and bring his girlfriend back to life.","title":"Love Story 2050","score":0.7649372816085815}'
    10'{"plot":"A dimension-traveling wizard gets stuck in the 21st century because cell-phone radiation interferes with his magic. With his home world on the brink of war, he seeks help from a jaded ...","title":"The Portal","score":0.7640786170959473}'
1
  1. Create a new directory called query-quick-start and initialize your project with the dotnet new command.

    mkdir query-quick-start
    cd query-quick-start
    dotnet new console
  2. Add the .NET/C# Driver to your project as a dependency.

    dotnet add package MongoDB.Driver

For more detailed installation instructions, see the MongoDB C# Driver documentation.

2

This query searches for documents that include text in the plot field that is semantically related to the term "time travel".

  1. Edit the Program.cs file.

  2. Copy and paste the following sample query into the Program.cs file:

    1using MongoDB.Bson;
    2using MongoDB.Bson.Serialization.Attributes;
    3using MongoDB.Bson.Serialization.Conventions;
    4using MongoDB.Driver;
    5
    6public class vectorSearchBasicQuery
    7{
    8 // define connection to your Atlas cluster
    9 private const string MongoConnectionString = "<connection-string>";
    10
    11 public static void Main(string[] args){
    12 var camelCaseConvention = new ConventionPack { new CamelCaseElementNameConvention() };
    13 ConventionRegistry.Register("CamelCase", camelCaseConvention, type => true);
    14
    15 // connect to your Atlas cluster
    16 var mongoClient = new MongoClient(MongoConnectionString);
    17
    18 // define namespace
    19 var moviesDatabase = mongoClient.GetDatabase("sample_mflix");
    20 var moviesCollection = moviesDatabase.GetCollection<EmbeddedMovie>("embedded_movies");
    21
    22 // define vector embeddings to search
    23 var vector = new[] 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    24 var options = new VectorSearchOptions<EmbeddedMovie>() {
    25 IndexName = "vector_index",
    26 NumberOfCandidates = 150
    27 };
    28
    29 // run query
    30 var results = moviesCollection.Aggregate()
    31 .VectorSearch(movie => movie.Embedding, vector, 10, options)
    32 .Project(Builders<EmbeddedMovie>.Projection
    33 .Include(movie => movie.Title)
    34 .Include(movie => movie.Plot)
    35 .Exclude(movie => movie.Id)
    36 .MetaVectorSearchScore(movie => movie.Score))
    37 .ToList();
    38
    39 // print results
    40 foreach (var movie in results)
    41 {
    42 Console.WriteLine(movie.ToJson());
    43 }
    44 }
    45}
    46
    47[BsonIgnoreExtraElements]
    48public class EmbeddedMovie
    49{
    50 [BsonIgnoreIfDefault]
    51 public ObjectId Id { get; set; }
    52 public string Title { get; set; }
    53 public string Plot { get; set; }
    54 [BsonElement("plot_embedding")]
    55 public double[] Embedding { get; set; }
    56 public double Score { get; set; }
    57}

This query uses the $vectorSearch stage to:

  • Compare vector embeddings of the search term against vector embeddings of movie plots in the plot_embedding field of the sample_mflix.embedded_moves collection.

  • Consider up to the 150 most similar movie plots and return the top 10 results.

It uses the $project stage to:

  • Only include the movie plot and title fields in the results.

  • Add a score field to show the relevance of each result to the search term.

To learn more about this pipeline stage, see Run Vector Search Queries.

3
  1. Replace <connection-string> with the connection string for your Atlas cluster or local deployment.

    Your connection string should use the following format:

    mongodb+srv://<db_username>:<db_password>@<clusterName>.<hostname>.mongodb.net

    Ensure that your connection string includes your database user's credentials. To learn more about finding your connection string, see Connect via Drivers.

    Your connection string should use the following format:

    mongodb://localhost:<port-number>/?directConnection=true
  2. Save the file.

4

Compile and run the Program.cs file.

dotnet run query-quick-start.csproj
1{ "plot" : "A reporter, learning of time travelers visiting 20th century disasters, tries to change the history they know by averting upcoming disasters.", "title" : "Thrill Seekers", "score" : 0.78926712274551392 }
2{ "plot" : "At the age of 21, Tim discovers he can travel in time and change what happens and has happened in his own life. His decision to make his world a better place by getting a girlfriend turns out not to be as easy as you might think.", "title" : "About Time", "score" : 0.78436046838760376 }
3{ "plot" : "Hoping to alter the events of the past, a 19th century inventor instead travels 800,000 years into the future, where he finds humankind divided into two warring races.", "title" : "The Time Machine", "score" : 0.78010666370391846 }
4{ "plot" : "After using his mother's newly built time machine, Dolf gets stuck involuntary in the year 1212. He ends up in a children's crusade where he confronts his new friends with modern techniques...", "title" : "Crusade in Jeans", "score" : 0.77891707420349121 }
5{ "plot" : "An officer for a security agency that regulates time travel, must fend for his life against a shady politician who has a tie to his past.", "title" : "Timecop", "score" : 0.77716124057769775 }
6{ "plot" : "A time-travel experiment in which a robot probe is sent from the year 2073 to the year 1973 goes terribly wrong thrusting one of the project scientists, a man named Nicholas Sinclair into a...", "title" : "A.P.E.X.", "score" : 0.77308857440948486 }
7{ "plot" : "Agent J travels in time to M.I.B.'s early days in 1969 to stop an alien from assassinating his friend Agent K and changing history.", "title" : "Men in Black 3", "score" : 0.77123808860778809 }
8{ "plot" : "Bound by a shared destiny, a teen bursting with scientific curiosity and a former boy-genius inventor embark on a mission to unearth the secrets of a place somewhere in time and space that exists in their collective memory.", "title" : "Tomorrowland", "score" : 0.76699239015579224 }
9{ "plot" : "With the help of his uncle, a man travels to the future to try and bring his girlfriend back to life.", "title" : "Love Story 2050", "score" : 0.76493728160858154 }
10{ "plot" : "A dimension-traveling wizard gets stuck in the 21st century because cell-phone radiation interferes with his magic. With his home world on the brink of war, he seeks help from a jaded ...", "title" : "The Portal", "score" : 0.76407861709594727 }
1

Run the following commands:

  1. Initialize your Go module:

    mkdir go-vector-quickstart && cd go-vector-quickstart
    go mod init go-vector-quickstart
  2. Add MongoDB Go as a dependency:

    go get go.mongodb.org/mongo-driver/mongo

For more detailed installation instructions, see the MongoDB Go Driver documentation.

2

This query searches for documents that include text in the plot field that is semantically related to the term "time travel".

  1. Create a file named atlas_vector_search_quick_start.go .

  2. Copy and paste the following sample query into the atlas_vector_search_quick_start.go file:

    1package main
    2
    3import (
    4 "context"
    5 "encoding/json"
    6 "fmt"
    7 "log"
    8
    9 "go.mongodb.org/mongo-driver/bson"
    10 "go.mongodb.org/mongo-driver/mongo"
    11 "go.mongodb.org/mongo-driver/mongo/options"
    12)
    13
    14func main() {
    15 ctx := context.Background()
    16
    17 // Replace the placeholder with your Atlas connection string
    18 const uri = "<connection-string>"
    19
    20 // Connect to your Atlas cluster
    21 clientOptions := options.Client().ApplyURI(uri)
    22 client, err := mongo.Connect(ctx, clientOptions)
    23 if err != nil {
    24 log.Fatalf("failed to connect to the server: %v", err)
    25 }
    26 defer func() { _ = client.Disconnect(ctx) }()
    27
    28 // Set the namespace
    29 coll := client.Database("sample_mflix").Collection("embedded_movies")
    30
    31 // Define the pipeline with $vectorSearch query options
    32 queryVectorValues := []float64{
    33 -0.0016261312, -0.028070757, -0.011342932, -0.012775794, -0.0027440966, 0.008683807, -0.02575152, -0.02020668, -0.010283281, -0.0041719596, 0.021392956, 0.028657231, -0.006634482, 0.007490867, 0.018593878, 0.0038187427, 0.029590257, -0.01451522, 0.016061379, 0.00008528442, -0.008943722, 0.01627464, 0.024311995, -0.025911469, 0.00022596726, -0.008863748, 0.008823762, -0.034921836, 0.007910728, -0.01515501, 0.035801545, -0.0035688248, -0.020299982, -0.03145631, -0.032256044, -0.028763862, -0.0071576433, -0.012769129, 0.012322609, -0.006621153, 0.010583182, 0.024085402, -0.001623632, 0.007864078, -0.021406285, 0.002554159, 0.012229307, -0.011762793, 0.0051682983, 0.0048484034, 0.018087378, 0.024325324, -0.037694257, -0.026537929, -0.008803768, -0.017767483, -0.012642504, -0.0062712682, 0.0009771782, -0.010409906, 0.017754154, -0.004671795, -0.030469967, 0.008477209, -0.005218282, -0.0058480743, -0.020153364, -0.0032805866, 0.004248601, 0.0051449724, 0.006791097, 0.007650814, 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0.042732596, -0.011649498, -0.011982721, -0.016967745, -0.0060913274, -0.007130985, -0.013109017, -0.009710136,
    34 }
    35
    36 pipeline := mongo.Pipeline{
    37 bson.D{
    38 {"$vectorSearch", bson.D{
    39 {"queryVector", queryVectorValues},
    40 {"index", "vector_index"},
    41 {"path", "plot_embedding"},
    42 {"numCandidates", 150},
    43 {"limit", 10},
    44 }},
    45 },
    46 bson.D{
    47 {"$project", bson.D{
    48 {"_id", 0},
    49 {"plot", 1},
    50 {"title", 1},
    51 {"score", bson.D{
    52 {"$meta", "vectorSearchScore"},
    53 }},
    54 }},
    55 },
    56 }
    57
    58 // Run the pipeline
    59 cursor, err := coll.Aggregate(ctx, pipeline)
    60 if err != nil {
    61 log.Fatalf("Failed to run aggregation: %v", err)
    62 }
    63 defer cursor.Close(ctx)
    64
    65 // Print results
    66 for cursor.Next(ctx) {
    67 var doc bson.M
    68 if err := cursor.Decode(&doc); err != nil {
    69 log.Fatalf("Failed to decode document: %v", err)
    70 }
    71 jsonDoc, err := json.Marshal(doc)
    72 if err != nil {
    73 log.Fatalf("Failed to marshal document to JSON: %v", err)
    74 }
    75 fmt.Println(string(jsonDoc))
    76 }
    77
    78 if err := cursor.Err(); err != nil {
    79 log.Fatalf("Cursor error: %v", err)
    80 }
    81}

This query uses the $vectorSearch stage to:

  • Compare vector embeddings of the search term against vector embeddings of movie plots in the plot_embedding field of the sample_mflix.embedded_moves collection.

  • Consider up to the 150 most similar movie plots and return the top 10 results.

It uses the $project stage to:

  • Only include the movie plot and title fields in the results.

  • Add a score field to show the relevance of each result to the search term.

To learn more about this pipeline stage, see Run Vector Search Queries.

3
  1. Replace <connection-string> with the connection string for your Atlas cluster or local deployment.

    Your connection string should use the following format:

    mongodb+srv://<db_username>:<db_password>@<clusterName>.<hostname>.mongodb.net

    Ensure that your connection string includes your database user's credentials. To learn more about finding your connection string, see Connect via Drivers.

    Your connection string should use the following format:

    mongodb://localhost:<port-number>/?directConnection=true
  2. Save the file.

4

Run the following command to query your collection:

go run atlas_vector_search_quick_start.go
1'{"plot":"A reporter, learning of time travelers visiting 20th century disasters, tries to change the history they know by averting upcoming disasters.","title":"Thrill Seekers","score":0.7892671227455139}'
2'{"plot":"At the age of 21, Tim discovers he can travel in time and change what happens and has happened in his own life. His decision to make his world a better place by getting a girlfriend turns out not to be as easy as you might think.","title":"About Time","score":0.7843604683876038}'
3'{"plot":"Hoping to alter the events of the past, a 19th century inventor instead travels 800,000 years into the future, where he finds humankind divided into two warring races.","title":"The Time Machine","score":0.7801066637039185}'
4`{"plot":"After using his mother's newly built time machine, Dolf gets stuck involuntary in the year 1212. He ends up in a children's crusade where he confronts his new friends with modern techniques...","title":"Crusade in Jeans","score":0.7789170742034912}`
5'{"plot":"An officer for a security agency that regulates time travel, must fend for his life against a shady politician who has a tie to his past.","title":"Timecop","score":0.7771612405776978}'
6'{"plot":"A time-travel experiment in which a robot probe is sent from the year 2073 to the year 1973 goes terribly wrong thrusting one of the project scientists, a man named Nicholas Sinclair into a...","title":"A.P.E.X.","score":0.7730885744094849}'
7`{"plot":"Agent J travels in time to M.I.B.'s early days in 1969 to stop an alien from assassinating his friend Agent K and changing history.","title":"Men in Black 3","score":0.7712380886077881}`
8'{"plot":"Bound by a shared destiny, a teen bursting with scientific curiosity and a former boy-genius inventor embark on a mission to unearth the secrets of a place somewhere in time and space that exists in their collective memory.","title":"Tomorrowland","score":0.7669923901557922}'
9'{"plot":"With the help of his uncle, a man travels to the future to try and bring his girlfriend back to life.","title":"Love Story 2050","score":0.7649372816085815}'
10'{"plot":"A dimension-traveling wizard gets stuck in the 21st century because cell-phone radiation interferes with his magic. With his home world on the brink of war, he seeks help from a jaded ...","title":"The Portal","score":0.7640786170959473}'
1
  1. Add the Java driver version 5.2 or higher as a dependency in your project:

    • If you are using Maven, add the following dependency to your pom.xml dependencies list:

      <dependency>
      <groupId>org.mongodb</groupId>
      <artifactId>mongodb-driver-sync</artifactId>
      <version>5.2.0</version>
      </dependency>
    • If you are using Gradle, add the following dependency to your build.gradle dependencies list:

      dependencies {
      implementation 'org.mongodb:mongodb-driver-sync:5.2.0'
      }
  2. Add the Java driver JAR files to your CLASSPATH.

For more detailed installation instructions and version compatibility, see the MongoDB Java Driver documentation.

2

This query searches for documents that include text in the plot field that is semantically related to the term "time travel".

  1. Create a file named BasicQuery.java.

  2. Copy and paste the following sample query into the BasicQuery.java file:

    1import com.mongodb.client.MongoClient;
    2import com.mongodb.client.MongoClients;
    3import com.mongodb.client.MongoCollection;
    4import com.mongodb.client.MongoDatabase;
    5import com.mongodb.client.model.search.FieldSearchPath;
    6import org.bson.Document;
    7import org.bson.conversions.Bson;
    8
    9import java.util.List;
    10
    11import static com.mongodb.client.model.Aggregates.project;
    12import static com.mongodb.client.model.Aggregates.vectorSearch;
    13import static com.mongodb.client.model.Projections.fields;
    14import static com.mongodb.client.model.Projections.include;
    15import static com.mongodb.client.model.Projections.exclude;
    16import static com.mongodb.client.model.Projections.metaVectorSearchScore;
    17import static com.mongodb.client.model.search.SearchPath.fieldPath;
    18import static com.mongodb.client.model.search.VectorSearchOptions.approximateVectorSearchOptions;
    19import static java.util.Arrays.asList;
    20
    21public class BasicQuery {
    22 public static void main( String[] args ) {
    23 // specify connection
    24 String uri = "<connection-string>";
    25
    26 // establish connection and set namespace
    27 try (MongoClient mongoClient = MongoClients.create(uri)) {
    28 MongoDatabase database = mongoClient.getDatabase("sample_mflix");
    29 MongoCollection<Document> collection = database.getCollection("embedded_movies");
    30
    31
    32 // define $vectorSearch query options
    33 List<Double> queryVector = (asList(-0.0016261312d, -0.028070757d, -0.011342932d, -0.012775794d, -0.0027440966d, 0.008683807d, -0.02575152d, -0.02020668d, -0.010283281d, -0.0041719596d, 0.021392956d, 0.028657231d, -0.006634482d, 0.007490867d, 0.018593878d, 0.0038187427d, 0.029590257d, -0.01451522d, 0.016061379d, 0.00008528442d, -0.008943722d, 0.01627464d, 0.024311995d, -0.025911469d, 0.00022596726d, -0.008863748d, 0.008823762d, -0.034921836d, 0.007910728d, -0.01515501d, 0.035801545d, -0.0035688248d, -0.020299982d, -0.03145631d, -0.032256044d, -0.028763862d, -0.0071576433d, -0.012769129d, 0.012322609d, -0.006621153d, 0.010583182d, 0.024085402d, -0.001623632d, 0.007864078d, -0.021406285d, 0.002554159d, 0.012229307d, -0.011762793d, 0.0051682983d, 0.0048484034d, 0.018087378d, 0.024325324d, -0.037694257d, -0.026537929d, -0.008803768d, -0.017767483d, -0.012642504d, -0.0062712682d, 0.0009771782d, -0.010409906d, 0.017754154d, -0.004671795d, -0.030469967d, 0.008477209d, -0.005218282d, 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    34 String indexName = "vector_index";
    35 FieldSearchPath fieldSearchPath = fieldPath("plot_embedding");
    36 int limit = 10;
    37 int numCandidates = 150;
    38
    39 // define pipeline
    40 List<Bson> pipeline = asList(
    41 vectorSearch(
    42 fieldSearchPath,
    43 queryVector,
    44 indexName,
    45 limit,
    46 approximateVectorSearchOptions(numCandidates)),
    47 project(
    48 fields(exclude("_id"), include("title"), include("plot"),
    49 metaVectorSearchScore("score"))));
    50
    51 // run query and print results
    52 collection.aggregate(pipeline)
    53 .forEach(doc -> System.out.println(doc.toJson()));
    54 }
    55 }
    56}

This query uses the $vectorSearch stage to:

  • Compare vector embeddings of the search term against vector embeddings of movie plots in the plot_embedding field of the sample_mflix.embedded_moves collection.

  • Consider up to the 150 most similar movie plots and return the top 10 results.

It uses the $project stage to:

  • Only include the movie plot and title fields in the results.

  • Add a score field to show the relevance of each result to the search term.

To learn more about this pipeline stage, see Run Vector Search Queries.

3
  1. Replace <connection-string> with the connection string for your Atlas cluster or local deployment.

    Your connection string should use the following format:

    mongodb+srv://<db_username>:<db_password>@<clusterName>.<hostname>.mongodb.net

    Ensure that your connection string includes your database user's credentials. To learn more about finding your connection string, see Connect via Drivers.

    Your connection string should use the following format:

    mongodb://localhost:<port-number>/?directConnection=true
  2. Save the file.

4

Compile and run the BasicQuery.java file:

javac BasicQuery.java
java BasicQuery
1{"plot": "A reporter, learning of time travelers visiting 20th century disasters, tries to change the history they know by averting upcoming disasters.", "title": "Thrill Seekers", "score": 0.7892671227455139}
2{"plot": "At the age of 21, Tim discovers he can travel in time and change what happens and has happened in his own life. His decision to make his world a better place by getting a girlfriend turns out not to be as easy as you might think.", "title": "About Time", "score": 0.7843604683876038}
3{"plot": "Hoping to alter the events of the past, a 19th century inventor instead travels 800,000 years into the future, where he finds humankind divided into two warring races.", "title": "The Time Machine", "score": 0.7801066637039185}
4{"plot": "After using his mother's newly built time machine, Dolf gets stuck involuntary in the year 1212. He ends up in a children's crusade where he confronts his new friends with modern techniques...", "title": "Crusade in Jeans", "score": 0.7789170742034912}
5{"plot": "An officer for a security agency that regulates time travel, must fend for his life against a shady politician who has a tie to his past.", "title": "Timecop", "score": 0.7771612405776978}
6{"plot": "A time-travel experiment in which a robot probe is sent from the year 2073 to the year 1973 goes terribly wrong thrusting one of the project scientists, a man named Nicholas Sinclair into a...", "title": "A.P.E.X.", "score": 0.7730885744094849}
7{"plot": "Agent J travels in time to M.I.B.'s early days in 1969 to stop an alien from assassinating his friend Agent K and changing history.", "title": "Men in Black 3", "score": 0.7712380886077881}
8{"plot": "Bound by a shared destiny, a teen bursting with scientific curiosity and a former boy-genius inventor embark on a mission to unearth the secrets of a place somewhere in time and space that exists in their collective memory.", "title": "Tomorrowland", "score": 0.7669923901557922}
9{"plot": "With the help of his uncle, a man travels to the future to try and bring his girlfriend back to life.", "title": "Love Story 2050", "score": 0.7649372816085815}
10{"plot": "A dimension-traveling wizard gets stuck in the 21st century because cell-phone radiation interferes with his magic. With his home world on the brink of war, he seeks help from a jaded ...", "title": "The Portal", "score": 0.7640786170959473}
1

Add the Kotlin Coroutine driver version 5.2 or higher as a dependency in your project:

  • If you are using Gradle, add the following dependency to your

    build.gradle dependencies list:

    dependencies {
    implementation 'mongodb-driver-kotlin-coroutine:5.2.0'
    }
  • If you are using Maven, add the following dependency to your

    pom.xml dependencies list:

    <dependency>
    <groupId>org.mongodb</groupId>
    <artifactId>mongodb-driver-kotlin-coroutine</artifactId>
    <version>5.2.0</version>
    </dependency>

For more detailed installation instructions and version compatibility, see the MongoDB Kotlin Coroutine Driver documentation.

2

This query searches for documents that include text in the plot field that is semantically related to the term "time travel".

  1. Create a file named atlasVectorSearchQuery.kt.

  2. Copy and paste the following sample query into the atlasVectorSearchQuery.kt file:

    1import com.mongodb.client.model.Aggregates
    2import com.mongodb.client.model.Projections
    3import com.mongodb.client.model.search.SearchPath.fieldPath
    4import com.mongodb.client.model.search.VectorSearchOptions
    5import com.mongodb.kotlin.client.coroutine.MongoClient
    6import kotlinx.coroutines.flow.count
    7import org.bson.Document
    8
    9data class Movie(val title: String, val plot: String, val score: Double?)
    10
    11suspend fun main() {
    12
    13 // Replace the placeholder with your Atlas connection string
    14 val uri = "<connection-string>"
    15 val client = MongoClient.create(uri)
    16
    17 try {
    18 // Connect to your Atlas cluster
    19 val database = client.getDatabase("sample_mflix")
    20 val collection = database.getCollection<Movie>("embedded_movies")
    21
    22 // Define the pipeline with $vectorSearch query options
    23 val queryVector = listOf(
    24 -0.0016261312, -0.028070757, -0.011342932, -0.012775794, -0.0027440966, 0.008683807, -0.02575152, -0.02020668, -0.010283281, -0.0041719596, 0.021392956, 0.028657231, -0.006634482, 0.007490867, 0.018593878, 0.0038187427, 0.029590257, -0.01451522, 0.016061379, 0.00008528442, -0.008943722, 0.01627464, 0.024311995, -0.025911469, 0.00022596726, -0.008863748, 0.008823762, -0.034921836, 0.007910728, -0.01515501, 0.035801545, -0.0035688248, -0.020299982, -0.03145631, -0.032256044, -0.028763862, -0.0071576433, -0.012769129, 0.012322609, -0.006621153, 0.010583182, 0.024085402, -0.001623632, 0.007864078, -0.021406285, 0.002554159, 0.012229307, -0.011762793, 0.0051682983, 0.0048484034, 0.018087378, 0.024325324, -0.037694257, -0.026537929, -0.008803768, -0.017767483, -0.012642504, -0.0062712682, 0.0009771782, -0.010409906, 0.017754154, -0.004671795, -0.030469967, 0.008477209, -0.005218282, -0.0058480743, -0.020153364, -0.0032805866, 0.004248601, 0.0051449724, 0.006791097, 0.007650814, 0.003458861, -0.0031223053, -0.01932697, -0.033615597, 0.00745088, 0.006321252, -0.0038154104, 0.014555207, 0.027697546, -0.02828402, 0.0066711367, 0.0077107945, 0.01794076, 0.011349596, -0.0052715978, 0.014755142, -0.019753495, -0.011156326, 0.011202978, 0.022126047, 0.00846388, 0.030549942, -0.0041386373, 0.018847128, -0.00033655585, 0.024925126, -0.003555496, -0.019300312, 0.010749794, 0.0075308536, -0.018287312, -0.016567878, -0.012869096, -0.015528221, 0.0078107617, -0.011156326, 0.013522214, -0.020646535, -0.01211601, 0.055928253, 0.011596181, -0.017247654, 0.0005939711, -0.026977783, -0.003942035, -0.009583511, -0.0055248477, -0.028737204, 0.023179034, 0.003995351, 0.0219661, -0.008470545, 0.023392297, 0.010469886, -0.015874773, 0.007890735, -0.009690142, -0.00024970944, 0.012775794, 0.0114762215, 0.013422247, 0.010429899, -0.03686786, -0.006717788, -0.027484283, 0.011556195, -0.036068123, -0.013915418, -0.0016327957, 0.0151016945, -0.020473259, 0.004671795, -0.012555866, 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0.042732596, -0.011649498, -0.011982721, -0.016967745, -0.0060913274, -0.007130985, -0.013109017, -0.009710136,
    25 )
    26 val path = fieldPath("plot_embedding")
    27 val index = "vector_index"
    28 val limit = 10L
    29 val numCandidates = 150L
    30
    31 val pipeline = listOf(
    32 Aggregates.vectorSearch(
    33 path,
    34 queryVector,
    35 index,
    36 limit,
    37 VectorSearchOptions.approximateVectorSearchOptions(numCandidates)
    38 ),
    39 Aggregates.project(
    40 Projections.fields(
    41 Projections.excludeId(),
    42 Projections.include(Movie::plot.name),
    43 Projections.include(Movie::title.name),
    44 Projections.metaVectorSearchScore(Movie::score.name)
    45 )
    46 )
    47 )
    48
    49 // Run the pipeline
    50 val resultsFlow = collection.aggregate<Document>(pipeline)
    51
    52 // Print results
    53 val resultCount = resultsFlow.count()
    54 if (resultCount > 0) {
    55 resultsFlow.collect { result ->
    56 println(result.toJson())
    57 }
    58 } else {
    59 println("No results found.")
    60 }
    61 } catch (e: Exception) {
    62 println("Error occurred: ${e.message}")
    63 } finally {
    64 client.close()
    65 }
    66}

This query uses the $vectorSearch stage to:

  • Compare vector embeddings of the search term against vector embeddings of movie plots in the plot_embedding field of the sample_mflix.embedded_moves collection.

  • Consider up to the 150 most similar movie plots and return the top 10 results.

It uses the $project stage to:

  • Only include the movie plot and title fields in the results.

  • Add a score field to show the relevance of each result to the search term.

To learn more about this pipeline stage, see Run Vector Search Queries.

3
  1. Replace <connection-string> with the connection string for your Atlas cluster or local deployment.

    Your connection string should use the following format:

    mongodb+srv://<db_username>:<db_password>@<clusterName>.<hostname>.mongodb.net

    Ensure that your connection string includes your database user's credentials. To learn more about finding your connection string, see Connect via Drivers.

    Your connection string should use the following format:

    mongodb://localhost:<port-number>/?directConnection=true
  2. Save the file.

4

Run the atlasVectorSearchQuery.kt file in your IDE. The output should resemble the following:

1'{"plot":"A reporter, learning of time travelers visiting 20th century disasters, tries to change the history they know by averting upcoming disasters.","title":"Thrill Seekers","score":0.7892671227455139}'
2'{"plot":"At the age of 21, Tim discovers he can travel in time and change what happens and has happened in his own life. His decision to make his world a better place by getting a girlfriend turns out not to be as easy as you might think.","title":"About Time","score":0.7843604683876038}'
3'{"plot":"Hoping to alter the events of the past, a 19th century inventor instead travels 800,000 years into the future, where he finds humankind divided into two warring races.","title":"The Time Machine","score":0.7801066637039185}'
4`{"plot":"After using his mother's newly built time machine, Dolf gets stuck involuntary in the year 1212. He ends up in a children's crusade where he confronts his new friends with modern techniques...","title":"Crusade in Jeans","score":0.7789170742034912}`
5'{"plot":"An officer for a security agency that regulates time travel, must fend for his life against a shady politician who has a tie to his past.","title":"Timecop","score":0.7771612405776978}'
6'{"plot":"A time-travel experiment in which a robot probe is sent from the year 2073 to the year 1973 goes terribly wrong thrusting one of the project scientists, a man named Nicholas Sinclair into a...","title":"A.P.E.X.","score":0.7730885744094849}'
7`{"plot":"Agent J travels in time to M.I.B.'s early days in 1969 to stop an alien from assassinating his friend Agent K and changing history.","title":"Men in Black 3","score":0.7712380886077881}`
8'{"plot":"Bound by a shared destiny, a teen bursting with scientific curiosity and a former boy-genius inventor embark on a mission to unearth the secrets of a place somewhere in time and space that exists in their collective memory.","title":"Tomorrowland","score":0.7669923901557922}'
9'{"plot":"With the help of his uncle, a man travels to the future to try and bring his girlfriend back to life.","title":"Love Story 2050","score":0.7649372816085815}'
10'{"plot":"A dimension-traveling wizard gets stuck in the 21st century because cell-phone radiation interferes with his magic. With his home world on the brink of war, he seeks help from a jaded ...","title":"The Portal","score":0.7640786170959473}'
1

Add the Kotlin Sync driver version 5.2 or higher as a dependency in your project:

  • If you are using Gradle, add the following dependency to your

    build.gradle dependencies list:

    dependencies {
    implementation 'mongodb-driver-kotlin-sync:5.2.0'
    }
  • If you are using Maven, add the following dependency to your

    pom.xml dependencies list:

    <dependency>
    <groupId>org.mongodb</groupId>
    <artifactId>mongodb-driver-kotlin-sync</artifactId>
    <version>5.2.0</version>
    </dependency>

For more detailed installation instructions and version compatibility, see the MongoDB Kotlin Sync Driver documentation.

2

This query searches for documents that include text in the plot field that is semantically related to the term "time travel".

  1. Create a file named atlasVectorSearchQuery.kt.

  2. Copy and paste the following sample query into the atlasVectorSearchQuery.kt file:

    1import com.mongodb.client.model.Aggregates
    2import com.mongodb.client.model.Projections
    3import com.mongodb.client.model.search.SearchPath.fieldPath
    4import com.mongodb.client.model.search.VectorSearchOptions
    5import com.mongodb.kotlin.client.MongoClient
    6import org.bson.Document
    7
    8data class Movie(val title: String, val plot: String, val score: Double?)
    9
    10fun main() {
    11
    12 // Replace the placeholder with your Atlas connection string
    13 val uri = "<connection-string>"
    14 val client = MongoClient.create(uri)
    15
    16 try {
    17 // Connect to your Atlas cluster
    18 val database = client.getDatabase("sample_mflix")
    19 val collection = database.getCollection<Movie>("embedded_movies")
    20
    21 // Define the pipeline with $vectorSearch query options
    22 val queryVector = listOf(
    23 -0.0016261312, -0.028070757, -0.011342932, -0.012775794, -0.0027440966, 0.008683807, -0.02575152, -0.02020668, -0.010283281, -0.0041719596, 0.021392956, 0.028657231, -0.006634482, 0.007490867, 0.018593878, 0.0038187427, 0.029590257, -0.01451522, 0.016061379, 0.00008528442, -0.008943722, 0.01627464, 0.024311995, -0.025911469, 0.00022596726, -0.008863748, 0.008823762, -0.034921836, 0.007910728, -0.01515501, 0.035801545, -0.0035688248, -0.020299982, -0.03145631, -0.032256044, -0.028763862, -0.0071576433, -0.012769129, 0.012322609, -0.006621153, 0.010583182, 0.024085402, -0.001623632, 0.007864078, -0.021406285, 0.002554159, 0.012229307, -0.011762793, 0.0051682983, 0.0048484034, 0.018087378, 0.024325324, -0.037694257, -0.026537929, -0.008803768, -0.017767483, -0.012642504, -0.0062712682, 0.0009771782, -0.010409906, 0.017754154, -0.004671795, -0.030469967, 0.008477209, -0.005218282, -0.0058480743, -0.020153364, -0.0032805866, 0.004248601, 0.0051449724, 0.006791097, 0.007650814, 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0.042732596, -0.011649498, -0.011982721, -0.016967745, -0.0060913274, -0.007130985, -0.013109017, -0.009710136,
    24 )
    25 val path = fieldPath("plot_embedding")
    26 val index = "vector_index"
    27 val limit = 10L
    28 val numCandidates = 150L
    29
    30 val pipeline = listOf(
    31 Aggregates.vectorSearch(
    32 path,
    33 queryVector,
    34 index,
    35 limit,
    36 VectorSearchOptions.approximateVectorSearchOptions(numCandidates)
    37 ),
    38 Aggregates.project(
    39 Projections.fields(
    40 Projections.excludeId(),
    41 Projections.include(Movie::plot.name),
    42 Projections.include(Movie::title.name),
    43 Projections.metaVectorSearchScore(Movie::score.name)
    44 )
    45 )
    46 )
    47
    48 // Run the pipeline
    49 val results = collection.aggregate<Document>(pipeline).toList()
    50
    51 // Print results
    52 if (results.isNotEmpty()) {
    53 results.forEach { result ->
    54 println(result.toJson()).toString()
    55 }
    56 } else {
    57 println("No results found.")
    58 }
    59 } catch (e: Exception) {
    60 println("Error occurred: ${e.message}")
    61 } finally {
    62 client.close()
    63 }
    64}

This query uses the $vectorSearch stage to:

  • Compare vector embeddings of the search term against vector embeddings of movie plots in the plot_embedding field of the sample_mflix.embedded_moves collection.

  • Consider up to the 150 most similar movie plots and return the top 10 results.

It uses the $project stage to:

  • Only include the movie plot and title fields in the results.

  • Add a score field to show the relevance of each result to the search term.

To learn more about this pipeline stage, see Run Vector Search Queries.

3
  1. Replace <connection-string> with the connection string for your Atlas cluster or local deployment.

    Your connection string should use the following format:

    mongodb+srv://<db_username>:<db_password>@<clusterName>.<hostname>.mongodb.net

    Ensure that your connection string includes your database user's credentials. To learn more about finding your connection string, see Connect via Drivers.

    Your connection string should use the following format:

    mongodb://localhost:<port-number>/?directConnection=true
  2. Save the file.

4

Run the atlasVectorSearchQuery.kt file in your IDE. The output should resemble the following:

1'{"plot":"A reporter, learning of time travelers visiting 20th century disasters, tries to change the history they know by averting upcoming disasters.","title":"Thrill Seekers","score":0.7892671227455139}'
2'{"plot":"At the age of 21, Tim discovers he can travel in time and change what happens and has happened in his own life. His decision to make his world a better place by getting a girlfriend turns out not to be as easy as you might think.","title":"About Time","score":0.7843604683876038}'
3'{"plot":"Hoping to alter the events of the past, a 19th century inventor instead travels 800,000 years into the future, where he finds humankind divided into two warring races.","title":"The Time Machine","score":0.7801066637039185}'
4`{"plot":"After using his mother's newly built time machine, Dolf gets stuck involuntary in the year 1212. He ends up in a children's crusade where he confronts his new friends with modern techniques...","title":"Crusade in Jeans","score":0.7789170742034912}`
5'{"plot":"An officer for a security agency that regulates time travel, must fend for his life against a shady politician who has a tie to his past.","title":"Timecop","score":0.7771612405776978}'
6'{"plot":"A time-travel experiment in which a robot probe is sent from the year 2073 to the year 1973 goes terribly wrong thrusting one of the project scientists, a man named Nicholas Sinclair into a...","title":"A.P.E.X.","score":0.7730885744094849}'
7`{"plot":"Agent J travels in time to M.I.B.'s early days in 1969 to stop an alien from assassinating his friend Agent K and changing history.","title":"Men in Black 3","score":0.7712380886077881}`
8'{"plot":"Bound by a shared destiny, a teen bursting with scientific curiosity and a former boy-genius inventor embark on a mission to unearth the secrets of a place somewhere in time and space that exists in their collective memory.","title":"Tomorrowland","score":0.7669923901557922}'
9'{"plot":"With the help of his uncle, a man travels to the future to try and bring his girlfriend back to life.","title":"Love Story 2050","score":0.7649372816085815}'
10'{"plot":"A dimension-traveling wizard gets stuck in the 21st century because cell-phone radiation interferes with his magic. With his home world on the brink of war, he seeks help from a jaded ...","title":"The Portal","score":0.7640786170959473}'
1
  1. Run one of the following commands:

npm install mongodb
yarn add mongodb

For more detailed installation instructions, see the MongoDB Node.js Driver documentation.

2

This query searches for documents that include text in the plot field that is semantically related to the term "time travel".

  1. Create a file named atlas-vector-search-quick-start.js .

  2. Copy and paste the following sample query into the atlas-vector-search-quick-start.js file:

    1const { MongoClient } = require("mongodb");
    2
    3// connect to your Atlas cluster
    4const uri = "<connection-string>";
    5
    6const client = new MongoClient(uri);
    7
    8async function run() {
    9 try {
    10 await client.connect();
    11
    12 // set namespace
    13 const database = client.db("sample_mflix");
    14 const coll = database.collection("embedded_movies");
    15
    16 // define pipeline
    17 const agg = [
    18 {
    19 '$vectorSearch': {
    20 'index': 'vector_index',
    21 'path': 'plot_embedding',
    22 'queryVector': [
    23 -0.0016261312, -0.028070757, -0.011342932, -0.012775794, -0.0027440966, 0.008683807, -0.02575152, -0.02020668, -0.010283281, -0.0041719596, 0.021392956, 0.028657231, -0.006634482, 0.007490867, 0.018593878, 0.0038187427, 0.029590257, -0.01451522, 0.016061379, 0.00008528442, -0.008943722, 0.01627464, 0.024311995, -0.025911469, 0.00022596726, -0.008863748, 0.008823762, -0.034921836, 0.007910728, -0.01515501, 0.035801545, -0.0035688248, -0.020299982, -0.03145631, -0.032256044, -0.028763862, -0.0071576433, -0.012769129, 0.012322609, -0.006621153, 0.010583182, 0.024085402, -0.001623632, 0.007864078, -0.021406285, 0.002554159, 0.012229307, -0.011762793, 0.0051682983, 0.0048484034, 0.018087378, 0.024325324, -0.037694257, -0.026537929, -0.008803768, -0.017767483, -0.012642504, -0.0062712682, 0.0009771782, -0.010409906, 0.017754154, -0.004671795, -0.030469967, 0.008477209, -0.005218282, -0.0058480743, -0.020153364, -0.0032805866, 0.004248601, 0.0051449724, 0.006791097, 0.007650814, 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0.042732596, -0.011649498, -0.011982721, -0.016967745, -0.0060913274, -0.007130985, -0.013109017, -0.009710136
    24 ],
    25 'numCandidates': 150,
    26 'limit': 10
    27 }
    28 }, {
    29 '$project': {
    30 '_id': 0,
    31 'plot': 1,
    32 'title': 1,
    33 'score': {
    34 '$meta': 'vectorSearchScore'
    35 }
    36 }
    37 }
    38 ];
    39 // run pipeline
    40 const result = coll.aggregate(agg);
    41
    42 // print results
    43 await result.forEach((doc) => console.dir(JSON.stringify(doc)));
    44 } finally {
    45 await client.close();
    46 }
    47}
    48run().catch(console.dir);

This query uses the $vectorSearch stage to:

  • Compare vector embeddings of the search term against vector embeddings of movie plots in the plot_embedding field of the sample_mflix.embedded_moves collection.

  • Consider up to the 150 most similar movie plots and return the top 10 results.

It uses the $project stage to:

  • Only include the movie plot and title fields in the results.

  • Add a score field to show the relevance of each result to the search term.

To learn more about this pipeline stage, see Run Vector Search Queries.

3
  1. Replace <connection-string> with the connection string for your Atlas cluster or local deployment.

    Your connection string should use the following format:

    mongodb+srv://<db_username>:<db_password>@<clusterName>.<hostname>.mongodb.net

    Ensure that your connection string includes your database user's credentials. To learn more about finding your connection string, see Connect via Drivers.

    Your connection string should use the following format:

    mongodb://localhost:<port-number>/?directConnection=true
  2. Save the file.

4

Run the following command to query your collection:

node atlas-vector-search-quick-start.js
1'{"plot":"A reporter, learning of time travelers visiting 20th century disasters, tries to change the history they know by averting upcoming disasters.","title":"Thrill Seekers","score":0.7892671227455139}'
2'{"plot":"At the age of 21, Tim discovers he can travel in time and change what happens and has happened in his own life. His decision to make his world a better place by getting a girlfriend turns out not to be as easy as you might think.","title":"About Time","score":0.7843604683876038}'
3'{"plot":"Hoping to alter the events of the past, a 19th century inventor instead travels 800,000 years into the future, where he finds humankind divided into two warring races.","title":"The Time Machine","score":0.7801066637039185}'
4`{"plot":"After using his mother's newly built time machine, Dolf gets stuck involuntary in the year 1212. He ends up in a children's crusade where he confronts his new friends with modern techniques...","title":"Crusade in Jeans","score":0.7789170742034912}`
5'{"plot":"An officer for a security agency that regulates time travel, must fend for his life against a shady politician who has a tie to his past.","title":"Timecop","score":0.7771612405776978}'
6'{"plot":"A time-travel experiment in which a robot probe is sent from the year 2073 to the year 1973 goes terribly wrong thrusting one of the project scientists, a man named Nicholas Sinclair into a...","title":"A.P.E.X.","score":0.7730885744094849}'
7`{"plot":"Agent J travels in time to M.I.B.'s early days in 1969 to stop an alien from assassinating his friend Agent K and changing history.","title":"Men in Black 3","score":0.7712380886077881}`
8'{"plot":"Bound by a shared destiny, a teen bursting with scientific curiosity and a former boy-genius inventor embark on a mission to unearth the secrets of a place somewhere in time and space that exists in their collective memory.","title":"Tomorrowland","score":0.7669923901557922}'
9'{"plot":"With the help of his uncle, a man travels to the future to try and bring his girlfriend back to life.","title":"Love Story 2050","score":0.7649372816085815}'
10'{"plot":"A dimension-traveling wizard gets stuck in the 21st century because cell-phone radiation interferes with his magic. With his home world on the brink of war, he seeks help from a jaded ...","title":"The Portal","score":0.7640786170959473}'
1

For detailed installation instructions, see the MongoDB PHP Library documentation.

2

This query searches for documents that include text in the plot field that is semantically related to the term "time travel".

  1. Create a file named atlas_vector_search_quick_start.php.

  2. Copy and paste the following sample query into the atlas_vector_search_quick_start.php file:

    1<?php
    2
    3require 'vendor/autoload.php';
    4
    5// Replace the placeholder with your Atlas connection string
    6$uri = '<connection-string>';
    7
    8try {
    9
    10 // Connect to your Atlas cluster
    11 $client = new MongoDB\Client($uri);
    12
    13 // Set the namespace
    14 $database = $client->selectDatabase('sample_mflix');
    15 $collection = $database->selectCollection('embedded_movies');
    16
    17 // Define the pipeline with $vectorSearch query options
    18 $pipeline = [
    19 [
    20 '$vectorSearch' => [
    21 'queryVector' => [
    22 -0.0016261312, -0.028070757, -0.011342932, -0.012775794, -0.0027440966, 0.008683807, -0.02575152, -0.02020668, -0.010283281, -0.0041719596, 0.021392956, 0.028657231, -0.006634482, 0.007490867, 0.018593878, 0.0038187427, 0.029590257, -0.01451522, 0.016061379, 0.00008528442, -0.008943722, 0.01627464, 0.024311995, -0.025911469, 0.00022596726, -0.008863748, 0.008823762, -0.034921836, 0.007910728, -0.01515501, 0.035801545, -0.0035688248, -0.020299982, -0.03145631, -0.032256044, -0.028763862, -0.0071576433, -0.012769129, 0.012322609, -0.006621153, 0.010583182, 0.024085402, -0.001623632, 0.007864078, -0.021406285, 0.002554159, 0.012229307, -0.011762793, 0.0051682983, 0.0048484034, 0.018087378, 0.024325324, -0.037694257, -0.026537929, -0.008803768, -0.017767483, -0.012642504, -0.0062712682, 0.0009771782, -0.010409906, 0.017754154, -0.004671795, -0.030469967, 0.008477209, -0.005218282, -0.0058480743, -0.020153364, -0.0032805866, 0.004248601, 0.0051449724, 0.006791097, 0.007650814, 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0.042732596, -0.011649498, -0.011982721, -0.016967745, -0.0060913274, -0.007130985, -0.013109017, -0.009710136
    23 ],
    24 'index' => 'vector_index',
    25 'path' => 'plot_embedding',
    26 'numCandidates' => 150,
    27 'limit' => 10
    28 ]
    29 ],
    30 [
    31 '$project' => [
    32 '_id' => 0,
    33 'plot' => 1,
    34 'title' => 1,
    35 'score' => [
    36 '$meta' => 'vectorSearchScore'
    37 ]
    38 ]
    39 ]
    40 ];
    41
    42 // Run the pipeline
    43 $result = $collection->aggregate($pipeline);
    44
    45 // Print results
    46 foreach ($result as $document) {
    47 echo json_encode($document) . "\n";
    48 }
    49
    50} catch (MongoDB\Driver\Exception\Exception $e) {
    51 echo "Error: " . $e->getMessage() . "\n";
    52}

This query uses the $vectorSearch stage to:

  • Compare vector embeddings of the search term against vector embeddings of movie plots in the plot_embedding field of the sample_mflix.embedded_moves collection.

  • Consider up to the 150 most similar movie plots and return the top 10 results.

It uses the $project stage to:

  • Only include the movie plot and title fields in the results.

  • Add a score field to show the relevance of each result to the search term.

To learn more about this pipeline stage, see Run Vector Search Queries.

3
  1. Replace <connection-string> with the connection string for your Atlas cluster or local deployment.

    Your connection string should use the following format:

    mongodb+srv://<db_username>:<db_password>@<clusterName>.<hostname>.mongodb.net

    Ensure that your connection string includes your database user's credentials. To learn more about finding your connection string, see Connect via Drivers.

    Your connection string should use the following format:

    mongodb://localhost:<port-number>/?directConnection=true
  2. Save the file.

4

Run the following command to query your collection:

php atlas_vector_search_quick_start.php
1'{"plot":"A reporter, learning of time travelers visiting 20th century disasters, tries to change the history they know by averting upcoming disasters.","title":"Thrill Seekers","score":0.7892671227455139}'
2'{"plot":"At the age of 21, Tim discovers he can travel in time and change what happens and has happened in his own life. His decision to make his world a better place by getting a girlfriend turns out not to be as easy as you might think.","title":"About Time","score":0.7843604683876038}'
3'{"plot":"Hoping to alter the events of the past, a 19th century inventor instead travels 800,000 years into the future, where he finds humankind divided into two warring races.","title":"The Time Machine","score":0.7801066637039185}'
4`{"plot":"After using his mother's newly built time machine, Dolf gets stuck involuntary in the year 1212. He ends up in a children's crusade where he confronts his new friends with modern techniques...","title":"Crusade in Jeans","score":0.7789170742034912}`
5'{"plot":"An officer for a security agency that regulates time travel, must fend for his life against a shady politician who has a tie to his past.","title":"Timecop","score":0.7771612405776978}'
6'{"plot":"A time-travel experiment in which a robot probe is sent from the year 2073 to the year 1973 goes terribly wrong thrusting one of the project scientists, a man named Nicholas Sinclair into a...","title":"A.P.E.X.","score":0.7730885744094849}'
7`{"plot":"Agent J travels in time to M.I.B.'s early days in 1969 to stop an alien from assassinating his friend Agent K and changing history.","title":"Men in Black 3","score":0.7712380886077881}`
8'{"plot":"Bound by a shared destiny, a teen bursting with scientific curiosity and a former boy-genius inventor embark on a mission to unearth the secrets of a place somewhere in time and space that exists in their collective memory.","title":"Tomorrowland","score":0.7669923901557922}'
9'{"plot":"With the help of his uncle, a man travels to the future to try and bring his girlfriend back to life.","title":"Love Story 2050","score":0.7649372816085815}'
10'{"plot":"A dimension-traveling wizard gets stuck in the 21st century because cell-phone radiation interferes with his magic. With his home world on the brink of war, he seeks help from a jaded ...","title":"The Portal","score":0.7640786170959473}'
1
  1. Run the following command:

pip install pymongo

For more detailed installation instructions, see the MongoDB Python Driver documentation.

2

This query searches for documents that include text in the plot field that is semantically related to the term "time travel".

  1. Create a file named atlas-vector-search-quick-start.py.

  2. Copy and paste the following sample query into the atlas-vector-search-quick-start.py file:

    1import pymongo
    2import datetime
    3
    4# connect to your Atlas cluster
    5client = pymongo.MongoClient("<connection-string>")
    6
    7# define pipeline
    8pipeline = [
    9 {
    10 '$vectorSearch': {
    11 'index': 'vector_index',
    12 'path': 'plot_embedding',
    13 'queryVector': [-0.0016261312, -0.028070757, -0.011342932, -0.012775794, -0.0027440966, 0.008683807, -0.02575152, -0.02020668, -0.010283281, -0.0041719596, 0.021392956, 0.028657231, -0.006634482, 0.007490867, 0.018593878, 0.0038187427, 0.029590257, -0.01451522, 0.016061379, 0.00008528442, -0.008943722, 0.01627464, 0.024311995, -0.025911469, 0.00022596726, -0.008863748, 0.008823762, -0.034921836, 0.007910728, -0.01515501, 0.035801545, -0.0035688248, -0.020299982, -0.03145631, -0.032256044, -0.028763862, -0.0071576433, -0.012769129, 0.012322609, -0.006621153, 0.010583182, 0.024085402, -0.001623632, 0.007864078, -0.021406285, 0.002554159, 0.012229307, -0.011762793, 0.0051682983, 0.0048484034, 0.018087378, 0.024325324, -0.037694257, -0.026537929, -0.008803768, -0.017767483, -0.012642504, -0.0062712682, 0.0009771782, -0.010409906, 0.017754154, -0.004671795, -0.030469967, 0.008477209, -0.005218282, -0.0058480743, -0.020153364, -0.0032805866, 0.004248601, 0.0051449724, 0.006791097, 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0.042732596, -0.011649498, -0.011982721, -0.016967745, -0.0060913274, -0.007130985, -0.013109017, -0.009710136],
    14 'numCandidates': 150,
    15 'limit': 10
    16 }
    17 }, {
    18 '$project': {
    19 '_id': 0,
    20 'plot': 1,
    21 'title': 1,
    22 'score': {
    23 '$meta': 'vectorSearchScore'
    24 }
    25 }
    26 }
    27]
    28
    29# run pipeline
    30result = client["sample_mflix"]["embedded_movies"].aggregate(pipeline)
    31
    32# print results
    33for i in result:
    34 print(i)
    35

This query uses the $vectorSearch stage to:

  • Compare vector embeddings of the search term against vector embeddings of movie plots in the plot_embedding field of the sample_mflix.embedded_moves collection.

  • Consider up to the 150 most similar movie plots and return the top 10 results.

It uses the $project stage to:

  • Only include the movie plot and title fields in the results.

  • Add a score field to show the relevance of each result to the search term.

To learn more about this pipeline stage, see Run Vector Search Queries.

3
  1. Replace <connection-string> with the connection string for your Atlas cluster or local deployment.

    Your connection string should use the following format:

    mongodb+srv://<db_username>:<db_password>@<clusterName>.<hostname>.mongodb.net

    Ensure that your connection string includes your database user's credentials. To learn more about finding your connection string, see Connect via Drivers.

    Your connection string should use the following format:

    mongodb://localhost:<port-number>/?directConnection=true
  2. Save the file.

4

Run the following command to query your collection:

python atlas-vector-search-quick-start.py
1{'plot': 'A reporter, learning of time travelers visiting 20th century disasters, tries to change the history they know by averting upcoming disasters.', 'title': 'Thrill Seekers', 'score': 0.7892671227455139}
2{'plot': 'At the age of 21, Tim discovers he can travel in time and change what happens and has happened in his own life. His decision to make his world a better place by getting a girlfriend turns out not to be as easy as you might think.', 'title': 'About Time', 'score': 0.7843604683876038}
3{'plot': 'Hoping to alter the events of the past, a 19th century inventor instead travels 800,000 years into the future, where he finds humankind divided into two warring races.', 'title': 'The Time Machine', 'score': 0.7801066637039185}
4{'plot': "After using his mother's newly built time machine, Dolf gets stuck involuntary in the year 1212. He ends up in a children's crusade where he confronts his new friends with modern techniques...", 'title': 'Crusade in Jeans', 'score': 0.7789170742034912}
5{'plot': 'An officer for a security agency that regulates time travel, must fend for his life against a shady politician who has a tie to his past.', 'title': 'Timecop', 'score': 0.7771612405776978}
6{'plot': 'A time-travel experiment in which a robot probe is sent from the year 2073 to the year 1973 goes terribly wrong thrusting one of the project scientists, a man named Nicholas Sinclair into a...', 'title': 'A.P.E.X.', 'score': 0.7730885744094849}
7{'plot': "Agent J travels in time to M.I.B.'s early days in 1969 to stop an alien from assassinating his friend Agent K and changing history.", 'title': 'Men in Black 3', 'score': 0.7712380886077881}
8{'plot': 'Bound by a shared destiny, a teen bursting with scientific curiosity and a former boy-genius inventor embark on a mission to unearth the secrets of a place somewhere in time and space that exists in their collective memory.', 'title': 'Tomorrowland', 'score': 0.7669923901557922}
9{'plot': 'With the help of his uncle, a man travels to the future to try and bring his girlfriend back to life.', 'title': 'Love Story 2050', 'score': 0.7649372816085815}
10{'plot': 'A dimension-traveling wizard gets stuck in the 21st century because cell-phone radiation interferes with his magic. With his home world on the brink of war, he seeks help from a jaded ...', 'title': 'The Portal', 'score': 0.7640786170959473}
1
  1. If you don't already have a Gemfile for your project, run the following command to generate one:

    bundle init
  2. Add the mongo gem to your Gemfile:

    Gemfile
    gem "mongo"
  3. Run the following command to install the dependency:

    bundle install

This installs the latest version of the Ruby driver. For alternate installation instructions and version compatibility, see the MongoDB Ruby Driver documentation.

2

This query searches for documents that include text in the plot field that is semantically related to the term "time travel".

  1. Create a file named atlas_vector_search_quick_start.rb .

  2. Copy and paste the following sample query into the atlas_vector_search_quick_start.rb file:

    1require 'mongo'
    2require 'json'
    3
    4# Replace the placeholder with your Atlas connection string
    5uri = "<connection-string>"
    6
    7begin
    8 # Connect to the MongoDB client
    9 client = Mongo::Client.new(uri, database: 'sample_mflix')
    10
    11 # Set the namespace
    12 db = client.database
    13 collection = db[:embedded_movies]
    14
    15 # Define the pipeline with $vectorSearch query options
    16 pipeline = [
    17 {
    18 '$vectorSearch' => {
    19 'queryVector' => [ -0.0016261312, -0.028070757, -0.011342932, -0.012775794, -0.0027440966, 0.008683807, -0.02575152, -0.02020668, -0.010283281, -0.0041719596, 0.021392956, 0.028657231, -0.006634482, 0.007490867, 0.018593878, 0.0038187427, 0.029590257, -0.01451522, 0.016061379, 0.00008528442, -0.008943722, 0.01627464, 0.024311995, -0.025911469, 0.00022596726, -0.008863748, 0.008823762, -0.034921836, 0.007910728, -0.01515501, 0.035801545, -0.0035688248, -0.020299982, -0.03145631, -0.032256044, -0.028763862, -0.0071576433, -0.012769129, 0.012322609, -0.006621153, 0.010583182, 0.024085402, -0.001623632, 0.007864078, -0.021406285, 0.002554159, 0.012229307, -0.011762793, 0.0051682983, 0.0048484034, 0.018087378, 0.024325324, -0.037694257, -0.026537929, -0.008803768, -0.017767483, -0.012642504, -0.0062712682, 0.0009771782, -0.010409906, 0.017754154, -0.004671795, -0.030469967, 0.008477209, -0.005218282, -0.0058480743, -0.020153364, -0.0032805866, 0.004248601, 0.0051449724, 0.006791097, 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0.011829439, 0.005391558, -0.016781142, -0.0058747325, 0.010309938, -0.013049036, 0.01186276, -0.0011246296, 0.0062112883, 0.0028190718, -0.021739509, 0.009883412, -0.0073175905, -0.012715813, -0.017181009, -0.016607866, -0.042492677, -0.0014478565, -0.01794076, 0.012302616, -0.015194997, -0.04433207, -0.020606548, 0.009696807, 0.010303274, -0.01694109, -0.004018677, 0.019353628, -0.001991011, 0.000058938927, 0.010536531, -0.17274313, 0.010143327, 0.014235313, -0.024152048, 0.025684876, -0.0012504216, 0.036601283, -0.003698782, 0.0007310093, 0.004165295, -0.0029157067, 0.017101036, -0.046891227, -0.017460918, 0.022965772, 0.020233337, -0.024072073, 0.017220996, 0.009370248, 0.0010363255, 0.0194336, -0.019606877, 0.01818068, -0.020819811, 0.007410893, 0.0019326969, 0.017887443, 0.006651143, 0.00067394477, -0.011889419, -0.025058415, -0.008543854, 0.021579562, 0.0047484366, 0.014062037, 0.0075508473, -0.009510202, -0.009143656, 0.0046817916, 0.013982063, -0.0027990784, 0.011782787, 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0.017220996, 0.004358565, -0.00934359, 0.0099967085, 0.011162991, 0.03092315, -0.021046404, -0.015514892, 0.0011946067, -0.01816735, 0.010876419, -0.10124666, -0.03550831, 0.0056348112, 0.013942076, 0.005951374, 0.020419942, -0.006857742, -0.020873128, -0.021259667, 0.0137554705, 0.0057880944, -0.029163731, -0.018767154, -0.021392956, 0.030896494, -0.005494857, -0.0027307675, -0.006801094, -0.014821786, 0.021392956, -0.0018110704, -0.0018843795, -0.012362596, -0.0072176233, -0.017194338, -0.018713837, -0.024272008, 0.03801415, 0.00015880188, 0.0044951867, -0.028630573, -0.0014070367, -0.00916365, -0.026537929, -0.009576847, -0.013995391, -0.0077107945, 0.0050016865, 0.00578143, -0.04467862, 0.008363913, 0.010136662, -0.0006268769, -0.006591163, 0.015341615, -0.027377652, -0.00093136, 0.029243704, -0.020886457, -0.01041657, -0.02424535, 0.005291591, -0.02980352, -0.009190307, 0.019460259, -0.0041286405, 0.004801752, 0.0011787785, -0.001257086, -0.011216307, -0.013395589, 0.00088137644, 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-0.03156294, -0.030869836, -0.006324584, 0.013795458, -0.00047151142, 0.016874444, 0.00947688, 0.00985009, -0.029883493, 0.024205362, -0.013522214, -0.015075036, -0.030603256, 0.029270362, 0.010503208, 0.021539574, 0.01743426, -0.023898797, 0.022019416, -0.0068777353, 0.027857494, -0.021259667, 0.0025758184, 0.006197959, 0.006447877, -0.00025200035, -0.004941706, -0.021246338, -0.005504854, -0.008390571, -0.0097301295, 0.027244363, -0.04446536, 0.05216949, 0.010243294, -0.016008062, 0.0122493, -0.0199401, 0.009077012, 0.019753495, 0.006431216, -0.037960835, -0.027377652, 0.016381273, -0.0038620618, 0.022512587, -0.010996379, -0.0015211658, -0.0102233, 0.007071005, 0.008230623, -0.009490209, -0.010083347, 0.024431955, 0.002427534, 0.02828402, 0.0035721571, -0.022192692, -0.011882754, 0.010056688, 0.0011904413, -0.01426197, -0.017500903, -0.00010985966, 0.005591492, -0.0077707744, -0.012049366, 0.011869425, 0.00858384, -0.024698535, -0.030283362, 0.020140035, 0.011949399, -0.013968734, 0.042732596, -0.011649498, -0.011982721, -0.016967745, -0.0060913274, -0.007130985, -0.013109017, -0.009710136 ],
    20 'index' => 'vector_index',
    21 'path' => 'plot_embedding',
    22 'numCandidates' => 150,
    23 'limit' => 10
    24 }
    25 },
    26 {
    27 '$project' => {
    28 '_id' => 0,
    29 'plot' => 1,
    30 'title' => 1,
    31 'score' => { '$meta' => 'vectorSearchScore' }
    32 }
    33 }
    34 ]
    35
    36 # Run the pipeline
    37 results = collection.aggregate(pipeline)
    38
    39 # Print results
    40 results.each do |document|
    41 puts JSON(document)
    42 end
    43
    44rescue Mongo::Error::NoServerAvailable => e
    45 puts "Failed to connect to MongoDB: #{e.message}"
    46
    47rescue Mongo::Error::OperationFailure => e
    48 puts "Failed to run aggregation: #{e.message}"
    49
    50rescue Mongo::Error => e
    51 puts "A MongoDB error occurred: #{e.message}"
    52
    53rescue StandardError => e
    54 puts "A general error occurred: #{e.message}"
    55
    56ensure
    57 client&.close
    58 puts "MongoDB client closed."
    59end

This query uses the $vectorSearch stage to:

  • Compare vector embeddings of the search term against vector embeddings of movie plots in the plot_embedding field of the sample_mflix.embedded_moves collection.

  • Consider up to the 150 most similar movie plots and return the top 10 results.

It uses the $project stage to:

  • Only include the movie plot and title fields in the results.

  • Add a score field to show the relevance of each result to the search term.

To learn more about this pipeline stage, see Run Vector Search Queries.

3
  1. Replace <connection-string> with the connection string for your Atlas cluster or local deployment.

    Your connection string should use the following format:

    mongodb+srv://<db_username>:<db_password>@<clusterName>.<hostname>.mongodb.net

    Ensure that your connection string includes your database user's credentials. To learn more about finding your connection string, see Connect via Drivers.

    Your connection string should use the following format:

    mongodb://localhost:<port-number>/?directConnection=true
  2. Save the file.

4

Run the following command to query your collection:

bundle exec ruby atlas_vector_search_quick_start.rb
1'{"plot":"A reporter, learning of time travelers visiting 20th century disasters, tries to change the history they know by averting upcoming disasters.","title":"Thrill Seekers","score":0.7892671227455139}'
2'{"plot":"At the age of 21, Tim discovers he can travel in time and change what happens and has happened in his own life. His decision to make his world a better place by getting a girlfriend turns out not to be as easy as you might think.","title":"About Time","score":0.7843604683876038}'
3'{"plot":"Hoping to alter the events of the past, a 19th century inventor instead travels 800,000 years into the future, where he finds humankind divided into two warring races.","title":"The Time Machine","score":0.7801066637039185}'
4`{"plot":"After using his mother's newly built time machine, Dolf gets stuck involuntary in the year 1212. He ends up in a children's crusade where he confronts his new friends with modern techniques...","title":"Crusade in Jeans","score":0.7789170742034912}`
5'{"plot":"An officer for a security agency that regulates time travel, must fend for his life against a shady politician who has a tie to his past.","title":"Timecop","score":0.7771612405776978}'
6'{"plot":"A time-travel experiment in which a robot probe is sent from the year 2073 to the year 1973 goes terribly wrong thrusting one of the project scientists, a man named Nicholas Sinclair into a...","title":"A.P.E.X.","score":0.7730885744094849}'
7`{"plot":"Agent J travels in time to M.I.B.'s early days in 1969 to stop an alien from assassinating his friend Agent K and changing history.","title":"Men in Black 3","score":0.7712380886077881}`
8'{"plot":"Bound by a shared destiny, a teen bursting with scientific curiosity and a former boy-genius inventor embark on a mission to unearth the secrets of a place somewhere in time and space that exists in their collective memory.","title":"Tomorrowland","score":0.7669923901557922}'
9'{"plot":"With the help of his uncle, a man travels to the future to try and bring his girlfriend back to life.","title":"Love Story 2050","score":0.7649372816085815}'
10'{"plot":"A dimension-traveling wizard gets stuck in the 21st century because cell-phone radiation interferes with his magic. With his home world on the brink of war, he seeks help from a jaded ...","title":"The Portal","score":0.7640786170959473}'
1

For more detailed installation instructions, see the MongoDB Rust Driver documentation.

2

This query searches for documents that include text in the plot field that is semantically related to the term "time travel".

In the main.rs file for your project, paste the following code:

#![recursion_limit = "2560"]
use mongodb::{
bson::{Document, doc},
Client
};
use futures::TryStreamExt;
#[tokio::main]
async fn main() -> mongodb::error::Result<()> {
// Replace the placeholder with your Atlas connection string
let client = Client::with_uri_str("<connection-string>").await?;
let pipeline = vec! [
doc! {
"$vectorSearch": doc! {
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],
"path": "plot_embedding",
"numCandidates": 150,
"index": "vector_index",
"limit": 10
}
},
doc! {
"$project": doc! {
"_id": 0,
"plot": 1,
"title": 1,
"score": doc! { "$meta": "vectorSearchScore"
}
}
}
];
let coll = client.database("sample_mflix").collection::<Document>("embedded_movies");
let mut results = coll.aggregate(pipeline).await?;
while let Some(result) = results.try_next().await? {
println!("{}", result);
}
Ok(())
}
#![recursion_limit = "2560"]
use mongodb::{
bson::{Document, doc},
sync::Client
};
fn main() -> mongodb::error::Result<()> {
// Replace the placeholder with your Atlas connection string
let client = Client::with_uri_str("<connection-string>")?;
let pipeline = vec! [
doc! {
"$vectorSearch": doc! {
"queryVector": [ -0.0016261312, -0.028070757, -0.011342932, -0.012775794, -0.0027440966, 0.008683807, -0.02575152, -0.02020668, -0.010283281, -0.0041719596, 0.021392956, 0.028657231, -0.006634482, 0.007490867, 0.018593878, 0.0038187427, 0.029590257, -0.01451522, 0.016061379, 0.00008528442, -0.008943722, 0.01627464, 0.024311995, -0.025911469, 0.00022596726, -0.008863748, 0.008823762, -0.034921836, 0.007910728, -0.01515501, 0.035801545, -0.0035688248, -0.020299982, -0.03145631, -0.032256044, -0.028763862, -0.0071576433, -0.012769129, 0.012322609, -0.006621153, 0.010583182, 0.024085402, -0.001623632, 0.007864078, -0.021406285, 0.002554159, 0.012229307, -0.011762793, 0.0051682983, 0.0048484034, 0.018087378, 0.024325324, -0.037694257, -0.026537929, -0.008803768, -0.017767483, -0.012642504, -0.0062712682, 0.0009771782, -0.010409906, 0.017754154, -0.004671795, -0.030469967, 0.008477209, -0.005218282, -0.0058480743, -0.020153364, -0.0032805866, 0.004248601, 0.0051449724, 0.006791097, 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0.042732596, -0.011649498, -0.011982721, -0.016967745, -0.0060913274, -0.007130985, -0.013109017, -0.009710136
],
"path": "plot_embedding",
"numCandidates": 150,
"index": "vector_index",
"limit": 10
}
},
doc! {
"$project": doc! {
"_id": 0,
"plot": 1,
"title": 1,
"score": doc! { "$meta": "vectorSearchScore"
}
}
}
];
let coll = client.database("sample_mflix").collection::<Document>("embedded_movies");
let mut cursor = coll.aggregate(pipeline).run()?;
while cursor.advance()? {
println!("{}", cursor.deserialize_current()?);
}
Ok(())
}

This query uses the $vectorSearch stage to:

  • Compare vector embeddings of the search term against vector embeddings of movie plots in the plot_embedding field of the sample_mflix.embedded_moves collection.

  • Consider up to the 150 most similar movie plots and return the top 10 results.

It uses the $project stage to:

  • Only include the movie plot and title fields in the results.

  • Add a score field to show the relevance of each result to the search term.

To learn more about this pipeline stage, see Run Vector Search Queries.

3
  1. Replace <connection-string> with the connection string for your Atlas cluster or local deployment.

    Your connection string should use the following format:

    mongodb+srv://<db_username>:<db_password>@<clusterName>.<hostname>.mongodb.net

    Ensure that your connection string includes your database user's credentials. To learn more about finding your connection string, see Connect via Drivers.

    Your connection string should use the following format:

    mongodb://localhost:<port-number>/?directConnection=true
  2. Save the file.

4

Run the following command to query your collection:

cargo run
1{'plot': 'A reporter, learning of time travelers visiting 20th century disasters, tries to change the history they know by averting upcoming disasters.', 'title': 'Thrill Seekers', 'score': 0.7892671227455139}
2{'plot': 'At the age of 21, Tim discovers he can travel in time and change what happens and has happened in his own life. His decision to make his world a better place by getting a girlfriend turns out not to be as easy as you might think.', 'title': 'About Time', 'score': 0.7843604683876038}
3{'plot': 'Hoping to alter the events of the past, a 19th century inventor instead travels 800,000 years into the future, where he finds humankind divided into two warring races.', 'title': 'The Time Machine', 'score': 0.7801066637039185}
4{'plot': "After using his mother's newly built time machine, Dolf gets stuck involuntary in the year 1212. He ends up in a children's crusade where he confronts his new friends with modern techniques...", 'title': 'Crusade in Jeans', 'score': 0.7789170742034912}
5{'plot': 'An officer for a security agency that regulates time travel, must fend for his life against a shady politician who has a tie to his past.', 'title': 'Timecop', 'score': 0.7771612405776978}
6{'plot': 'A time-travel experiment in which a robot probe is sent from the year 2073 to the year 1973 goes terribly wrong thrusting one of the project scientists, a man named Nicholas Sinclair into a...', 'title': 'A.P.E.X.', 'score': 0.7730885744094849}
7{'plot': "Agent J travels in time to M.I.B.'s early days in 1969 to stop an alien from assassinating his friend Agent K and changing history.", 'title': 'Men in Black 3', 'score': 0.7712380886077881}
8{'plot': 'Bound by a shared destiny, a teen bursting with scientific curiosity and a former boy-genius inventor embark on a mission to unearth the secrets of a place somewhere in time and space that exists in their collective memory.', 'title': 'Tomorrowland', 'score': 0.7669923901557922}
9{'plot': 'With the help of his uncle, a man travels to the future to try and bring his girlfriend back to life.', 'title': 'Love Story 2050', 'score': 0.7649372816085815}
10{'plot': 'A dimension-traveling wizard gets stuck in the 21st century because cell-phone radiation interferes with his magic. With his home world on the brink of war, he seeks help from a jaded ...', 'title': 'The Portal', 'score': 0.7640786170959473}
1

For installation instructions based on your environment and the version of Scala you are using, refer to the MongoDB Scala Driver documentation.

2

This query searches for documents that include text in the plot field that is semantically related to the term "time travel".

  1. Create a new Scala project with the tools you normally use. For this quick start, we create a project named quick-start, by using sbt.

    sbt new scala/hello-world.g8

    When prompted, name the application quick-start.

  2. Open the Main.scala file and replace the contents with the following vector search query:

    import org.mongodb.scala._
    import org.mongodb.scala.model._
    import org.mongodb.scala.model.Aggregates._
    import org.mongodb.scala.model.Projections._
    import org.mongodb.scala.model.search.SearchPath.fieldPath
    object Main extends App {
    val mongoClient: MongoClient = MongoClient("<connection-string>")
    val database: MongoDatabase = mongoClient.getDatabase("sample_mflix")
    val collection: MongoCollection[Document] = database.getCollection("embedded_movies")
    collection.aggregate(Seq(
    Aggregates.vectorSearch(fieldPath("plot_embedding"),
    List(-0.0016261312, -0.028070757, -0.011342932, -0.012775794, -0.0027440966, 0.008683807, -0.02575152, -0.02020668, -0.010283281, -0.0041719596, 0.021392956, 0.028657231, -0.006634482, 0.007490867, 0.018593878, 0.0038187427, 0.029590257, -0.01451522, 0.016061379, 0.00008528442, -0.008943722, 0.01627464, 0.024311995, -0.025911469, 0.00022596726, -0.008863748, 0.008823762, -0.034921836, 0.007910728, -0.01515501, 0.035801545, -0.0035688248, -0.020299982, -0.03145631, -0.032256044, -0.028763862, -0.0071576433, -0.012769129, 0.012322609, -0.006621153, 0.010583182, 0.024085402, -0.001623632, 0.007864078, -0.021406285, 0.002554159, 0.012229307, -0.011762793, 0.0051682983, 0.0048484034, 0.018087378, 0.024325324, -0.037694257, -0.026537929, -0.008803768, -0.017767483, -0.012642504, -0.0062712682, 0.0009771782, -0.010409906, 0.017754154, -0.004671795, -0.030469967, 0.008477209, -0.005218282, -0.0058480743, -0.020153364, -0.0032805866, 0.004248601, 0.0051449724, 0.006791097, 0.007650814, 0.003458861, -0.0031223053, -0.01932697, -0.033615597, 0.00745088, 0.006321252, -0.0038154104, 0.014555207, 0.027697546, -0.02828402, 0.0066711367, 0.0077107945, 0.01794076, 0.011349596, -0.0052715978, 0.014755142, -0.019753495, -0.011156326, 0.011202978, 0.022126047, 0.00846388, 0.030549942, -0.0041386373, 0.018847128, -0.00033655585, 0.024925126, -0.003555496, -0.019300312, 0.010749794, 0.0075308536, -0.018287312, -0.016567878, -0.012869096, -0.015528221, 0.0078107617, -0.011156326, 0.013522214, -0.020646535, -0.01211601, 0.055928253, 0.011596181, -0.017247654, 0.0005939711, -0.026977783, -0.003942035, -0.009583511, -0.0055248477, -0.028737204, 0.023179034, 0.003995351, 0.0219661, -0.008470545, 0.023392297, 0.010469886, -0.015874773, 0.007890735, -0.009690142, -0.00024970944, 0.012775794, 0.0114762215, 0.013422247, 0.010429899, -0.03686786, -0.006717788, -0.027484283, 0.011556195, -0.036068123, -0.013915418, -0.0016327957, 0.0151016945, -0.020473259, 0.004671795, -0.012555866, 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0.042732596, -0.011649498, -0.011982721, -0.016967745, -0.0060913274, -0.007130985, -0.013109017, -0.009710136),
    "vector_index",
    150,
    10
    ),
    Aggregates.project(
    Projections.fields(
    Projections.excludeId(),
    Projections.include("plot"),
    Projections.include("title"),
    Projections.meta(
    "score", "vectorSearchScore"
    )
    )
    )
    )).foreach { doc => println(doc.toBsonDocument()) }
    }

This query uses the $vectorSearch stage to:

  • Compare vector embeddings of the search term against vector embeddings of movie plots in the plot_embedding field of the sample_mflix.embedded_moves collection.

  • Consider up to the 150 most similar movie plots and return the top 10 results.

It uses the $project stage to:

  • Only include the movie plot and title fields in the results.

  • Add a score field to show the relevance of each result to the search term.

To learn more about this pipeline stage, see Run Vector Search Queries.

3
  1. Replace <connection-string> with the connection string for your Atlas cluster or local deployment.

    Your connection string should use the following format:

    mongodb+srv://<db_username>:<db_password>@<clusterName>.<hostname>.mongodb.net

    Ensure that your connection string includes your database user's credentials. To learn more about finding your connection string, see Connect via Drivers.

    Your connection string should use the following format:

    mongodb://localhost:<port-number>/?directConnection=true
  2. Save the file.

4

There are many tools and environments in which Scala runs. In this example, we run the new Scala project by starting the sbt server with the sbt command, then typing ~run.

sbt:quick-start> ~run
1'{"plot":"A reporter, learning of time travelers visiting 20th century disasters, tries to change the history they know by averting upcoming disasters.","title":"Thrill Seekers","score":0.7892671227455139}'
2'{"plot":"At the age of 21, Tim discovers he can travel in time and change what happens and has happened in his own life. His decision to make his world a better place by getting a girlfriend turns out not to be as easy as you might think.","title":"About Time","score":0.7843604683876038}'
3'{"plot":"Hoping to alter the events of the past, a 19th century inventor instead travels 800,000 years into the future, where he finds humankind divided into two warring races.","title":"The Time Machine","score":0.7801066637039185}'
4`{"plot":"After using his mother's newly built time machine, Dolf gets stuck involuntary in the year 1212. He ends up in a children's crusade where he confronts his new friends with modern techniques...","title":"Crusade in Jeans","score":0.7789170742034912}`
5'{"plot":"An officer for a security agency that regulates time travel, must fend for his life against a shady politician who has a tie to his past.","title":"Timecop","score":0.7771612405776978}'
6'{"plot":"A time-travel experiment in which a robot probe is sent from the year 2073 to the year 1973 goes terribly wrong thrusting one of the project scientists, a man named Nicholas Sinclair into a...","title":"A.P.E.X.","score":0.7730885744094849}'
7`{"plot":"Agent J travels in time to M.I.B.'s early days in 1969 to stop an alien from assassinating his friend Agent K and changing history.","title":"Men in Black 3","score":0.7712380886077881}`
8'{"plot":"Bound by a shared destiny, a teen bursting with scientific curiosity and a former boy-genius inventor embark on a mission to unearth the secrets of a place somewhere in time and space that exists in their collective memory.","title":"Tomorrowland","score":0.7669923901557922}'
9'{"plot":"With the help of his uncle, a man travels to the future to try and bring his girlfriend back to life.","title":"Love Story 2050","score":0.7649372816085815}'
10'{"plot":"A dimension-traveling wizard gets stuck in the 21st century because cell-phone radiation interferes with his magic. With his home world on the brink of war, he seeks help from a jaded ...","title":"The Portal","score":0.7640786170959473}'

This quick start focused on retrieving documents from your Atlas cluster that contain text that is semantically related to a provided query. However, you can create a vector search index on embeddings that represent any type of data that you might write to an Atlas cluster, such as images or videos.

This quick start uses the sample_mflix.embedded_movies collection which contains details about movies. In each document in the collection, the plot_embedding field contains a vector embedding that represents the string in the plot field. For more information on the schema of the documents in the collection, see Sample Mflix Dataset.

By storing your source data and its corresponding vector embeddings in the same document, you can leverage both fields for complex queries or hybrid search. You can even store vector embeddings generated from different embedding models in the same document to streamline your workflow as you test the performance of different vector embedding models for your specific use case.

The vector embeddings in the sample_mflix.embedded_movies collection and in the example query were created using the OpenAI text-embedding-ada-002 embedding model. Your choice of embedding model informs the vector dimensions and vector similarity function you use in your vector search index. You can use any embedding model you like, and it is worth experimenting with different models as accuracy can vary from model to model depending on your specific use case.

To learn how to create vector embeddings of your own data, see How to Create Vector Embeddings.

An index is a data structure that holds a subset of data from a collection's documents that improves database performance for specific queries. A vector search index points to the fields that contain your vector embeddings and includes the dimensions of your vectors as well as the function used to measure similarity between vectors of queries and vectors stored in the database.

Because the text-embedding-ada-002 embedding model used in this quick start converts data into vector embeddings with 1536 dimensions and supports the cosine function, this vector search index specifies the same number of vector dimensions and similarity function.

The query you ran in this quick start is an aggregation pipeline, in which the $vectorSearch stage performs an Approximate Nearest Neighbor (ANN) search followed by a $project stage that refines the results. To see all the options for a vector search query, including using Exact Nearest Neighbor (ENN) or how to narrow the scope of your vector search with the filter option, see Run Vector Search Queries.

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