Ejecuta una query de búsqueda vectorial en MongoDB

Overview

En esta guía, aprenderá a realizar búsquedas en sus documentos mediante la función de búsqueda vectorial de MongoDB. El controlador de C++ permite realizar consultas de búsqueda vectorial de MongoDB mediante el marco de agregación. Para obtener más información sobre cómo realizar agregaciones, consulte Guíade agregación.

Nota

Compatibilidad de implementación

La función de búsqueda vectorial de MongoDB solo se puede usar en clústeres de MongoDB Atlas. Esta función no está disponible para implementaciones autogestionadas.

Para obtener más información sobre MongoDB Vector Search, consulte Descripción general de la búsqueda vectorial de MongoDB en la documentación de Atlas.

Nota

MongoDB búsqueda

Para realizar búsquedas avanzadas de texto completo en sus documentos, puede usar la función de búsqueda de MongoDB. Para obtener más información sobre esta función, consulte la descripción general de la búsqueda de MongoDB.

Índice de búsqueda vectorial de MongoDB

Para poder realizar consultas de búsqueda vectorial de MongoDB, debe crear un índice de búsqueda vectorial de MongoDB en su colección. Para obtener más información sobre cómo crear este índice, consulte la guía de índices de búsqueda vectorial de MongoDB.

Etapa de agregación de búsqueda vectorial

Para crear una $vectorSearch En esta etapa de su canalización de agregación, realice las siguientes acciones:

Crea un vector para almacenar las etapas del pipeline.
Especifique el operador $vectorSearch y proporcione detalles sobre la consulta de búsqueda vectorial.

Debes definir los siguientes campos en tu etapa $vectorSearch:

Parameter	Tipo de dato	Descripción
`index`	`string`	Nombre del índice de búsqueda vectorial
`path`	`string`	Campo que contiene incrustaciones vectoriales
`queryVector`	`BSON::Binary` subtipo de vector, `BSON::Vector`, o matriz de números	Representación vectorial de su consulta
`limit`	`number`	Número de resultados a retornar

Luego, incluya la etapa en una canalización de agregación y pase la canalización al método aggregate.

Ejemplos de consultas de búsqueda de MongoDB

En esta sección, aprenderá a realizar consultas de búsqueda vectorial de MongoDB. Los ejemplos de esta sección utilizan datos de muestra de la sample_mflix.embedded_movies colección. Para aprender a cargar estos datos de muestra, consulte el tutorial "Cargar datos en Atlas" en la documentación de Atlas.

Consulta de búsqueda básica de vectores

El siguiente código realiza una consulta de búsqueda vectorial de MongoDB en el campo vectorial plot_embedding utilizando un vector de consulta que es una incrustación vectorial de la frase "viaje en el tiempo":

#include <bsoncxx/builder/basic/document.hpp>
#include <bsoncxx/builder/list.hpp>
#include <bsoncxx/json.hpp>
#include <mongocxx/client.hpp>
#include <mongocxx/instance.hpp>
#include <mongocxx/uri.hpp>
using bsoncxx::builder::basic::kvp;
using bsoncxx::builder::basic::make_document;
int main() {
  try {
    mongocxx::instance inst{};
    // Replace the placeholder with your Atlas connection string
    const auto uri = mongocxx::uri{"<connection-string>"};
    // Connect to your Atlas cluster
    auto client = mongocxx::client{uri};
    auto db = client["sample_mflix"];
    auto collection = db["embedded_movies"];
    // Define vector embeddings to search
    auto vectors = bsoncxx::builder::list{
      -0.034731735,0.008558298,-0.0153717,-0.029912498,0.011549547,0.010261648,-0.011964999,-0.023265276,0.010303194,-0.006896493,-0.00054528,0.003926015,-0.025757983,0.027419789,0.001199616,-0.036227357,-0.005297005,0.021935832,0.010303194,-0.019193852,0.025093261,-0.040049512,-0.033900831,-0.011466458,-0.01827986,-0.0153717,0.023265276,0.007727395,0.000114249,0.005317777,-0.043871664,-0.02127111,-0.019609304,0.016368784,-0.004756918,0.003552109,0.006522586,-0.005400868,-0.015620971,-0.034565553,-0.018695312,-0.023099095,0.050851244,-0.034731735,0.004819236,0.022268193,-0.095719993,0.05517194,-0.046198189,-0.036393538,0.007187308,-0.02459472,-0.036725901,0.009472291,0.019027673,0.020938748,-0.011051006,0.027087428,0.04586583,-0.022600554,-0.05517194,0.044204023,0.01213118,0.047859997,-0.03938479,0.002928932,0.002056484,0.019443123,-0.028583053,0.013543714,0.022932915,0.011632638,0.004923099,0.000389486,0.020024756,-0.024096178,-0.022766734,0.011217186,-0.003198975,0.007104218,-0.047195274,-0.013377533,0.013294443,0.024096178,-0.056501385,-0.026755067,-0.008433662,-0.001911076,0.007976666,-0.008101301,-0.014042255,0.008641388,-0.02176965,0.010012378,-0.000607598,-0.024927082,0.024927082,-0.018612221,-0.001184036,0.005567048,0.001324251,-0.019526213,-0.023597637,0.060489718,-0.010178559,-0.019609304,0.004112968,-0.011217186,-0.031574301,-0.008766023,0.005483958,-0.061819162,-0.023431456,-0.040714234,0.015039339,0.026422706,0.016202603,0.004653055,0.041046593,-0.018030589,0.040381871,-0.002638116,0.013045172,0.004216831,0.005650138,0.027419789,0.003926015,-0.028749233,0.004798463,-0.030244859,0.063813329,0.007145763,-0.017448956,0.025591804,-0.045201108,0.010718645,0.002804297,0.014291527,0.04586583,-0.015205519,-0.021603471,-0.035230275,0.00760276,0.033236109,0.016534964,-0.043206941,-0.003115885,-0.026256526,0.005940954,0.016534964,0.024262359,-0.001630647,0.028084511,-0.012795902,0.007270399,0.001381376,-0.009763107,-0.006896493,0.008433662,-0.019360034,0.000386889,0.030411039,0.025591804,0.010469374,0.037722982,-0.001147684,-0.005400868,0.052845411,-0.052513052,0.00768585,-0.004299921,0.00922302,0.011881908,0.012962082,-0.068798743,0.003593654,0.020938748,-0.013792985,-0.034565553,-0.007519669,-0.04021569,-0.020689478,0.006273315,0.046862911,0.006107135,0.002638116,-0.013792985,-0.005400868,-0.020274026,0.007644305,-0.010801735,0.026422706,0.043871664,0.003780607,0.010261648,-0.064145692,0.011881908,-0.009056839,0.009347656,-0.02459472,0.026422706,0.033236109,0.041212775,0.019027673,-0.00315743,0.004424557,0.020689478,-0.0153717,-0.015205519,-0.034897912,0.020274026,0.016867325,0.040714234,-0.022766734,-0.010967916,0.026256526,0.007062673,-0.015953332,-0.007727395,0.031574301,-0.002887387,-0.00614868,0.004569965,0.019027673,0.012878992,0.011798819,0.004258377,-0.019193852,-0.021437289,-0.021603471,0.000301202,-0.051183607,-0.004985416,-0.030078677,0.012629721,0.065142773,-0.031740483,-0.021104928,-0.03938479,-0.003365156,-0.016036423,0.036393538,0.009804652,-0.018612221,0.060489718,-0.003697517,0.000547876,0.063480966,0.02758597,0.010053922,-0.003655972,-0.001485239,0.018362951,0.021104928,-0.003905243,0.019443123,-0.002658889,-0.00380138,-0.013626805,0.035894997,0.035396457,-0.005691683,0.002762751,0.012878992,-0.009596926,-0.009970833,-0.015953332,0.022434372,0.00614868,-0.021188019,0.001557943,-0.020190936,0.009763107,0.017448956,0.006730312,0.005567048,0.019692395,-0.00218112,-0.016867325,0.006854947,0.007976666,0.019193852,0.040880412,0.007353489,-0.02127111,-0.031906664,-0.026755067,-0.017947499,0.040381871,0.042209856,0.00913993,-0.0307434,-0.017781317,-0.015039339,0.03057722,0.017532047,0.0187784,-0.060822077,0.002928932,-0.026422706,-0.005899409,0.039717149,0.026588887,-0.000971118,0.004923099,-0.013626805,0.0187784,-0.031408124,-0.000695881,0.050851244,-0.014457707,-0.007311944,-0.001293092,-0.002139574,-0.019276943,0.00290816,0.019360034,-0.017781317,0.002160347,0.016618054,-0.006522586,0.011798819,0.029247776,-0.02775215,0.010344739,-0.018362951,-0.036725901,-0.015870241,0.015704062,-0.012463541,0.02459472,-0.024096178,0.001152877,-0.031408124,0.025425622,0.027087428,0.00922302,0.034565553,0.015704062,-0.020689478,-0.00517237,-0.014706978,-0.001589101,0.026090344,0.014956249,0.011715728,0.004299921,-0.00913993,0.022434372,-0.03705826,0.048524719,-0.030411039,0.008433662,0.017033506,-0.000511525,-0.031408124,0.005940954,-0.012962082,-0.031574301,0.017448956,0.010178559,-0.011383367,-0.020107845,-0.005151597,0.006647222,0.013128263,0.007145763,0.008059756,-0.045201108,-0.004943871,0.015787151,-0.045201108,-0.020772567,-0.020274026,0.028250692,-0.024262359,-0.004424557,0.009804652,0.000472576,-0.005691683,0.001443693,-0.013294443,0.001412535,0.013211353,-0.01213118,-0.002118802,0.017781317,-0.007353489,-0.031075761,-0.004923099,0.011383367,-0.004486875,-0.010178559,0.016618054,0.014457707,0.023763817,-0.02459472,-0.00388447,0.012546631,-0.007519669,0.015704062,-0.014291527,0.009680017,-0.035562634,0.023763817,0.053510133,-0.0555043,-0.003572882,0.022102011,0.021603471,-0.017282777,-0.001474852,-0.043539301,0.007810486,-0.025757983,-0.005400868,0.029912498,-0.00760276,0.014125346,0.030909581,-0.03340229,-0.009680017,0.018030589,0.008849114,0.03057722,0.019775484,0.014125346,0.031906664,-0.03057722,-0.027087428,-0.023597637,-0.022434372,-0.012878992,0.016285693,-0.021603471,-0.029746316,0.029746316,0.020357117,0.006314861,-0.001158071,0.028749233,-0.045201108,0.011383367,0.011134096,-0.021437289,-0.035728816,0.001827986,0.008267482,-0.057498466,0.01213118,-0.01213118,-0.040548053,0.010718645,0.004798463,-0.004881553,-0.019526213,-0.008558298,0.0059825,-0.000262254,-0.017615138,0.005193142,0.019692395,-0.00198378,-0.002845842,0.012546631,0.006107135,-0.008225936,-0.008890659,0.015870241,0.00517237,0.002596571,-0.010427829,-0.019110762,0.024262359,0.012048089,-0.032405205,0.006522586,0.013211353,0.013211353,-0.038221523,-0.007727395,-0.008267482,-0.019276943,0.001474852,0.031408124,-0.035562634,0.017532047,-0.023431456,-0.015454791,-0.011383367,0.016534964,-0.02176965,0.008682934,0.027253609,0.020190936,-0.0247609,-0.007311944,0.009555381,-0.01852913,-0.011632638,0.011549547,0.027419789,-0.034067012,-0.01229736,0.0307434,0.003946788,0.0046946,0.037722982,0.03057722,-0.010427829,0.002284982,0.033236109,0.030078677,-0.013377533,0.007395034,-0.012048089,0.040714234,-0.028749233,-0.000102565,-0.0059825,-0.041046593,0.017698228,-0.006356406,0.003178203,0.009056839,0.023099095,0.00606559,0.011881908,-0.02127111,-0.001126912,-0.027087428,0.011134096,0.001204809,-0.017033506,0.011051006,-0.014374617,0.017864408,0.023431456,-0.002077257,-0.026755067,-0.043871664,0.025757983,-0.006190225,0.001152877,0.011798819,-0.024262359,0.006564131,-0.070128188,-0.004362239,0.012962082,-0.013626805,-0.001402148,-0.012214269,0.011217186,-0.015953332,0.015787151,0.011134096,0.027253609,0.024262359,-0.048192356,0.009970833,0.018944582,-0.00517237,0.021935832,0.02775215,0.003406701,-0.010884825,0.075113602,-0.015953332,0.007727395,0.026755067,-0.006190225,-0.012712811,0.013377533,0.005940954,-0.008309027,0.02459472,0.002316141,-0.022434372,-0.012712811,0.03057722,-0.015787151,0.026755067,-0.001069787,0.03988333,-0.003697517,0.039550968,-0.019027673,-0.0059825,-0.00031029,-0.012546631,-0.003614427,0.007478124,0.005525503,0.032571387,-0.011798819,-0.011466458,-0.00606559,-0.011798819,0.018446039,0.007976666,0.018944582,-0.02176965,0.026588887,-0.006273315,-0.012463541,-0.007395034,0.012048089,-0.029247776,0.015454791,-0.007145763,0.006481041,-0.015620971,-0.00388447,-0.025757983,-0.001651419,-0.032903746,-0.005068507,0.03938479,0.003926015,0.004715373,0.022600554,-0.012546631,0.022932915,0.007810486,0.040714234,0.019941665,0.013543714,0.003406701,0.010884825,-0.03988333,0.042209856,-0.022766734,0.027419789,-0.029580137,0.043206941,0.022932915,0.021104928,-0.056833744,0.005193142,0.036061179,-0.012878992,0.008516753,-0.02758597,-0.030244859,-0.011798819,0.001111332,-0.014125346,-0.014125346,0.019027673,0.029081594,0.018861491,0.013626805,0.06846638,0.023099095,0.041378956,0.001599488,-0.028749233,0.017781317,0.016285693,0.021603471,-0.018113678,0.011300277,-0.032239024,0.022434372,-0.02459472,-0.013626805,0.005483958,0.013460624,-0.031574301,-0.015620971,0.016451873,0.014790068,-0.008849114,0.011134096,0.00461151,0.015122429,0.036227357,0.00206687,0.000877641,0.022102011,-0.028250692,0.022600554,-0.026422706,0.004029878,-0.032072846,0.017116595,0.010884825,0.019609304,0.00614868,0.005733229,0.016119512,0.002866614,-0.014540797,0.012463541,-0.003905243,0.003759835,-0.000485559,-0.022766734,-0.016285693,0.037722982,0.009513836,0.001506011,0.011964999,0.004029878,0.019941665,-0.000965924,0.002129188,0.015205519,0.071125269,0.022932915,0.005940954,-0.00044661,0.010220103,-0.03423319,-0.016285693,-0.016867325,-0.000659529,-0.008018211,-0.011383367,0.000016634,0.004071423,-0.029413955,0.019941665,-0.00913993,-0.024096178,0.010635555,0.010594009,0.001547556,0.036227357,-0.030078677,0.020772567,0.022268193,-0.014125346,0.008766023,-0.012962082,-0.007187308,0.017033506,-0.007187308,-0.015205519,-0.005608593,0.044536386,-0.001235968,0.007852031,0.001599488,0.005857864,-0.005940954,-0.010510919,-0.005567048,0.006730312,0.016285693,-0.010801735,-0.024428539,0.015122429,-0.02176965,0.01528861,-0.007436579,0.00226421,-0.004715373,0.004507647,0.004341467,0.005525503,-0.031075761,-0.005899409,0.037556801,0.014873158,-0.000342747,0.009970833,-0.019443123,0.023597637,-0.012048089,-0.025259443,0.006024044,-0.01827986,0.010012378,0.016784234,0.013211353,-0.005400868,-0.024428539,-0.02176965,-0.035230275,0.009347656,0.028583053,-0.015704062,-0.017781317,0.00226421,0.001199616,-0.003385928,0.008267482,0.002326528,0.022434372,-0.020190936,-0.015787151,0.000789358,0.031241942,0.011300277,0.001506011,-0.023265276,-0.010967916,0.009056839,0.011300277,-0.030244859,0.007478124,0.001111332,-0.035894997,0.0153717,0.002700434,0.021104928,0.010884825,-0.003344383,0.00768585,0.010386284,0.00452842,-0.014706978,0.028084511,0.013377533,0.014873158,0.046862911,-0.015454791,0.021188019,0.013959166,0.012629721,0.025924165,-0.018695312,-0.00922302,-0.0093892,0.007727395,0.036892079,0.007228854,-0.01229736,0.029247776,-0.004943871,-0.027253609,-0.008433662,0.043206941,0.002825069,0.028583053,-0.023431456,0.034897912,-0.041545134,-0.016534964,0.003053567,-0.012712811,0.002741979,-0.007187308,-0.025093261,-0.045201108,-0.004424557,-0.016618054,-0.008890659,0.008018211,-0.05184833,-0.019526213,-0.013377533,-0.010469374,0.030244859,-0.005068507,0.051183607,0.005483958,-0.006024044,0.035064094,-0.011134096,0.014956249,0.002284982,0.001724123,-0.01229736,0.012629721,0.010261648,0.014540797,0.048857078,-0.029580137,-0.024927082,-0.008350573,-0.03988333,0.000939959,0.013543714,0.013626805,-0.021437289,-0.012962082,0.006771857,0.013709894,-0.0059825,0.035396457,-0.006439496,-0.029580137,0.0046946,0.019609304,-0.007270399,0.014291527,-0.015620971,0.00118923,-0.00760276,-0.017199686,0.023265276,0.026588887,-0.030078677,-0.016701145,-0.025757983,0.004964644,0.026588887,0.043206941,0.011051006,-0.009846197,0.028915415,0.031574301,0.023763817,0.009264565,-0.008433662,-0.035064094,-0.000579035,-0.0247609,0.014125346,0.016618054,0.028749233,-0.052513052,-0.016867325,-0.01238045,0.002741979,0.013709894,0.010718645,0.013626805,0.009596926,-0.004403784,-0.02758597,-0.000945152,0.000420645,0.003759835,0.012546631,-0.011881908,0.008392117,0.012795902,0.005483958,-0.009763107,0.006397951,-0.010801735,0.012795902,-0.03938479,0.005733229,0.005733229,-0.000433627,0.015454791,0.002357686,-0.006564131,0.030244859,-0.024428539,0.016036423,0.014291527,-0.004964644,0.029413955,0.040381871,0.012629721,-0.033568468,-0.026422706,-0.037889164,-0.034399372,-0.03423319,0.021935832,0.004133741,-0.014623888,-0.013543714,-0.05517194,0.004736145,0.006314861,0.00006037,0.006356406,0.003323611,-0.010344739,0.007062673,0.005899409,-0.00623177,-0.001973394,-0.0555043,0.011881908,0.001350217,-0.033069927,-0.026921248,0.022268193,0.028583053,-0.021021837,0.010884825,0.019692395,-0.005442413,0.031574301,-0.014956249,0.01238045,-0.006356406,0.006273315,-0.003095113,-0.014540797,-0.02176965,0.005006189,-0.002658889,0.042542219,-0.02176965,0.017199686,-0.016701145,-0.001599488,0.016950415,-0.021188019,0.017864408,0.023763817,-0.000669915,0.025093261,0.021104928,0.008807569,0.037390623,-0.025591804,-0.003178203,-0.001319058,0.020523297,0.005255459,0.019276943,-0.00226421,0.00760276,-0.057166107,-0.006896493,-0.034067012,0.043871664,0.038221523,0.008101301,0.03988333,0.015870241,0.000955538,-0.004299921,-0.002928932,-0.002118802,-0.020523297,-0.001168457,-0.011134096,-0.000685495,0.003323611,0.011549547,0.034565553,0.029247776,-0.029746316,0.005213914,0.019110762,-0.003302838,0.026422706,0.028915415,-0.036227357,0.033236109,0.038387705,-0.035230275,0.004071423,-0.021935832,0.002928932,0.000976311,0.000527104,-0.006854947,-0.003822153,-0.001199616,0.019858574,-0.002762751,0.039052427,-0.008641388,0.032239024,-0.002295369,0.035396457,0.044536386,-0.029413955,0.025093261,-0.03423319,-0.016867325,-0.008849114,0.008433662,-0.004486875,0.017033506,0.006730312,-0.008599843,-0.008225936,-0.024428539,0.006564131,-0.007561215,-0.032072846,-0.019941665,0.035396457,0.019276943,0.010261648,0.005857864,0.032239024,-0.044204023,-0.018944582,0.002409618,0.032903746,0.05517194,-0.03655972,0.007976666,0.030909581,-0.023929998,0.016368784,0.01528861,-0.00768585,0.02176965,0.013626805,-0.02459472,0.04021569,-0.032737568,0.006854947,-0.011383367,0.014873158,-0.02176965,0.00243039,0.0093892,0.0093892,-0.029580137,0.019858574,0.01827986,0.024428539,0.017864408,-0.028250692,-0.001111332,0.056169022,0.007478124,-0.010718645,0.041046593,-0.015704062,0.034731735,0.002523867,-0.032571387,0.004341467,-0.023597637,-0.011881908,-0.035562634,0.006688767,0.007810486,-0.012712811,0.022600554,0.03057722,0.022600554,0.010552464,0.0307434,-0.009638472,0.02176965,-0.018030589,0.024262359,-0.036227357,-0.020772567,0.001641033,-0.022932915,-0.014623888,0.018362951,0.002575798,0.006190225,-0.011051006,0.021021837,0.019110762,0.02127111,-0.028583053,-0.052180689,-0.014291527,-0.010552464,0.036393538,0.042542219,-0.04586583,-0.001869531,0.008350573,-0.008516753,-0.020772567,0.000294711,0.015704062,-0.014457707,-0.020772567,0.008766023,-0.026588887,-0.004736145,-0.028084511,-0.007519669,0.010552464,-0.016534964,0.006190225,0.012962082,-0.016618054,0.012546631,0.02459472,0.022932915,0.020440206,-0.027918331,-0.008059756,0.020689478,-0.014623888,-0.011466458,-0.006896493,-0.020024756,-0.031408124,0.021603471,0.007270399,-0.03057722,0.008350573,-0.021437289,0.00072704,-0.043871664,0.006314861,-0.017199686,0.02176965,0.024262359,-0.020357117,-0.000542683,-0.005213914,0.001963008,-0.00064395,-0.022434372,0.022102011,-0.006688767,-0.028583053,0.002191506,-0.005047734,0.002368073,0.014956249,0.023929998,-0.003302838,-0.032239024,0.022268193,-0.013377533,-0.010801735,0.003676744,0.009015295,-0.039550968,0.010884825,-0.033568468,0.013709894,-0.029413955,-0.006356406,-0.020274026,0.023597637,0.030909581,0.02176965,0.016285693,0.045533467,-0.024096178,-0.030909581,-0.026422706,0.002783524,-0.010594009,0.004362239,-0.070792913,0.009472291,-0.022102011,0.011134096,-0.017448956,-0.011549547,-0.056833744,0.00082571,0.026588887,-0.013709894,0.002575798,0.02176965,-0.000568649,-0.007270399,0.004279149,-0.042874578,-0.026588887,0.016784234,0.036725901,-0.028915415,-0.009513836,0.017448956,0.002035712,-0.007228854,0.011383367,0.011134096,0.028915415,0.0153717,-0.027087428,0.043871664,-0.005089279,0.006314861,0.014291527,-0.003240521,0.025924165,-0.001230775,-0.015454791,-0.012629721,0.031740483,-0.039717149,-0.031075761,0.006605676,-0.008641388,-0.032239024,0.037722982,-0.03705826,-0.024096178,0.001911076,0.018196769,-0.007353489,-0.011300277,-0.029081594,0.004590738,-0.018030589,-0.026588887,0.010261648,0.038221523,0.008392117,-0.01213118,0.018362951,-0.034731735,-0.017781317,-0.011632638,0.005255459,0.000851675,0.014208436,-0.000039922,-0.000228498,0.014790068,0.00913993,0.0004544,-0.011798819,-0.020440206,0.005899409,0.008350573,0.006314861,0.040548053,0.003427474,-0.010801735,0.008599843,0.002586185,-0.041212775,-0.016368784,0.020024756,0.000965924,-0.021021837,-0.008475208,0.0307434,0.00760276,0.003614427,0.003489791,-0.025924165,0.000799744,0.013460624,-0.020440206,0.048857078,0.004320694,-0.048857078,0.015039339,-0.029580137,0.025924165,0.018861491,-0.014706978,0.000576439,-0.031241942,0.0307434,0.0153717,0.014706978,0.028084511,-0.01238045,-0.031241942,0.018196769,-0.034897912,0.008142847,0.010718645,0.00922302,0.047859997,-0.00072704,-0.010427829,0.007104218,0.026256526,0.012214269,-0.013377533,-0.05184833,0.005276232,0.021935832,-0.007021128,0.009804652,0.007893575,0.024096178,-0.002357686,0.033900831,-0.031740483,0.034565553,-0.036892079,-0.015454791,0.030411039,0.010552464,-0.022268193,-0.001391762,-0.008184392,-0.008558298,0.008475208,-0.009929287,0.010427829,0.041378956,-0.009555381,-0.008724478,-0.039052427,0.034731735,-0.014291527,0.023099095,0.029081594,0.007519669,0.010967916,-0.008142847,0.006190225,-0.031075761,0.033734649,-0.001672192,0.047859997,-0.022434372,-0.007395034,0.01213118,0.056169022,0.002762751,-0.029413955,-0.000763392,-0.015787151,0.010801735,0.008142847,0.029912498,-0.0018176,0.033236109,-0.046198189,-0.002492708,-0.006730312,0.008807569,-0.03655972,0.009430746,-0.053842496,-0.060489718,0.046862911,0.002783524,-0.0187784,0.000571246,0.00760276,0.002482322,0.001319058,-0.014291527,0.001464466,-0.011632638,-0.012463541,-0.004902326,0.000841289,0.006688767,0.030244859,0.018944582,0.000532297,-0.015620971,0.007104218,0.005608593,0.002035712,-0.023763817,0.003032795,0.010594009,-0.023597637,-0.042376038,-0.005255459,0.001199616,-0.0247609,-0.007893575,-0.011632638,0.013045172,-0.005691683,-0.007104218,0.027419789,-0.004320694,-0.005525503,-0.026090344,0.031408124,-0.012795902,-0.007062673,0.000939959,0.000030185,0.004175286,0.014291527,0.033236109,-0.038720068,0.074116521,-0.019692395,0.001589101,0.013792985,-0.056169022,-0.028749233,-0.001599488,0.004175286,0.014790068,0.00162026,-0.007519669,-0.041378956,0.016534964,-0.003572882,-0.002575798,-0.019526213,-0.00922302,-0.033900831,-0.042043675,-0.014208436,0.010178559,0.017698228,0.032239024,0.00913993,0.009264565,-0.012463541,-0.005857864,-0.015870241,0.004486875,0.018861491,-0.000176567,-0.029912498,0.016784234,0.012546631,0.051183607,0.023597637,0.032903746,0.0153717,-0.013377533,-0.000016634,-0.061486799,-0.034565553,0.016119512,0.00380138,-0.003863698,0.004362239,-0.017532047,-0.002762751,0.000102565,-0.021437289,0.029247776,-0.010718645,-0.015870241,-0.016285693,0.010220103,-0.000373906,0.012962082,0.010137013,-0.007228854,0.02127111,-0.029247776,0.018113678,0.009181475,0.002233051,0.014374617,-0.00396756,0.010801735,0.007644305,0.020855658,0.014790068,0.032737568,-0.037390623,0.003032795,0.010801735,-0.01553788,-0.014790068,0.019526213,-0.017947499,-0.007893575,-0.011964999,-0.00614868,-0.005857864,-0.032072846,-0.025924165,0.001163264,-0.013294443,-0.01553788,0.016701145,-0.013460624,-0.001111332,0.00760276,0.01553788,-0.033734649,0.048192356,-0.003282066,0.031906664,0.002845842,0.003240521,0.017116595,-0.01827986,0.006896493,-0.00760276,-0.009680017,-0.02459472,-0.020689478,-0.053510133,0.00614868,-0.010552464,-0.032405205,-0.0307434,0.025093261,0.003635199,-0.008101301,-0.00606559,-0.007436579,0.00606559,-0.012962082,0.026921248,0.009098385,0.046530552,-0.011632638,0.032571387,-0.033900831,0.009846197,0.002866614,0.032903746,0.008973749,0.012712811,0.040049512,0.013626805,-0.026256526,-0.031408124,0.036227357,0.011964999,-0.006024044,-0.001848759,0.015704062,-0.021188019,-0.035064094,-0.013377533,-0.009721561,-0.01553788,0.008766023,0.005400868,0.004507647,-0.018362951,-0.026588887,-0.00913993,-0.025591804,0.035894997,0.021935832,-0.031906664,-0.000602404,0.026422706,-0.006397951,0.006647222,0.0093892,0.020606387,0.00913993,0.015620971,-0.024096178,0.00063616,-0.006564131,0.01238045,-0.013709894,0.000563456,-0.009887742,0.016618054,-0.003323611,0.000451803,0.001609874,0.008682934,0.025259443,0.020024756,-0.027253609,0.010884825,0.028250692,-0.054839578,0.033568468,-0.004902326,0.003053567,0.020274026,-0.015704062,-0.00614868,-0.063813329,0.002482322,0.009763107,-0.001609874,-0.012214269,0.020107845,0.001921462,0.018695312,-0.004923099,0.007270399,-0.023763817,0.005234687,0.003406701,0.002565412,0.007104218,0.000841289,0.016202603,0.01827986,-0.031075761,-0.035562634,-0.025259443,-0.007021128,0.000641353,-0.033069927,0.010718645,0.005650138,0.024927082,-0.002658889,0.00380138,0.009929287,-0.004258377,-0.039717149,-0.022434372,0.025425622,0.00198378,0.006356406,0.017615138,-0.032072846,0.046862911,-0.026921248,0.005940954,0.021603471,-0.002253824,0.002825069,-0.030411039,-0.003115885,0.023597637,-0.004320694,-0.007852031,0.018030589,-0.008724478,-0.005733229,0.032903746,0.013876075,0.015454791,-0.023597637,0.005151597,-0.035396457,0.02176965,-0.012463541,0.025591804,0.014540797,-0.027918331,0.004154514,0.008724478,0.016036423,-0.015870241,0.005400868,-0.017365867,-0.044868745,-0.000485559,0.020357117,-0.00760276,-0.023265276,-0.012048089,0.008433662,0.018362951,-0.006979583,0.0307434,0.008392117,0.027087428,-0.019360034,0.016119512,0.02127111,0.010801735,0.00299125,0.002949705,0.012463541,-0.000025966,0.015953332,0.029413955,0.020024756,0.003780607,0.022102011,-0.031740483,0.01553788,0.010386284,0.028749233,-0.010884825,0.008682934,-0.003531337,-0.05517194,-0.019360034,-0.009347656,-0.002025325,0.003261293,-0.025425622,-0.01553788,-0.000251867,0.014291527,0.012546631,0.035728816,-0.007062673,-0.006605676,0.000384293,-0.005047734,-0.032571387,-0.021188019,-0.02127111,-0.016036423,0.008475208,-0.004009106,0.014291527,-0.008101301,0.004424557,-0.038221523,-0.019360034,0.015039339,-0.015454791,-0.029580137,0.035728816,0.004466102,-0.000778971,-0.005068507,-0.017781317,0.00477769,0.001838372,0.030244859,0.01213118,-0.022932915,-0.005359322,0.037390623,0.005899409,0.002046098,0.037889164,0.016701145,0.010303194,0.02127111,-0.009513836,-0.022268193,-0.005650138,-0.00388447,0.016534964,-0.023265276,-0.00054528,0.004819236,0.004715373,-0.001178843,-0.051183607,-0.00614868,-0.010552464,-0.002741979,-0.009181475,0.023597637,0.019193852,0.017199686,-0.036393538,-0.00243039,-0.015870241,-0.014706978,-0.00145408,0.016368784,-0.011632638,-0.014623888,-0.01229736,-0.01553788,0.040880412,0.023929998,-0.014623888,0.002648502,0.031906664,-0.033734649,-0.026755067,0.002783524,0.005359322,0.009970833,0.001412535,0.016950415,0.016285693,-0.006730312,-0.02459472,0.050851244,-0.001827986,-0.020855658,0.020938748,0.004071423,-0.021603471,-0.007852031,-0.023929998,-0.029912498,-0.003365156,0.017365867,-0.010427829,-0.011715728,0.014956249,0.011383367,0.032405205,-0.028583053,-0.017448956,0.018446039,0.017615138,0.035728816,-0.010095468,-0.00254464,0.010012378,0.028250692,-0.020855658,-0.002305755,-0.001002276,-0.014125346,-0.007021128,-0.028583053,-0.045533467,-0.02758597,-0.020440206,0.001350217,0.010053922,0.020689478,-0.017615138,0.026422706,0.040880412,0.012463541,-0.010718645,-0.014706978,0.068134025,0.038720068,0.047859997,-0.012546631,0.015704062,-0.002087643,-0.010303194,0.014790068,0.018612221,0.007395034,-0.014790068,-0.017864408,-0.005068507,-0.054507218,0.004902326,-0.004050651,0.021603471,0.019775484,-0.024262359,-0.012795902,0.021935832,-0.004009106,-0.039717149,0.037556801,-0.016701145,-0.025757983,0.005483958,-0.005110051,-0.021935832,-0.003406701,0.010594009,0.015787151,-0.049854163,0.007727395,-0.008392117,-0.017199686,0.009970833,-0.008849114,-0.013876075,-0.0059825,-0.015870241,-0.007104218,0.028250692,-0.029081594,0.026921248,0.00299125,-0.017781317,0.042542219,0.018196769,0.052845411,-0.004819236,-0.014125346,0.02459472,-0.011715728,0.015787151,-0.005774774,0.004902326,-0.004964644,-0.02758597,-0.013959166,-0.033568468,-0.027918331,-0.017698228,0.003489791,-0.020024756,-0.021603471,0.019360034,0.028084511,-0.002503094,-0.018861491,-0.002295369,0.050851244,-0.020689478,-0.000459593,-0.026090344,0.002783524,-0.005899409,-0.026921248,-0.0093892,-0.004112968,0.031574301,0.003926015,-0.032903746,-0.046198189,-0.019027673,-0.00913993,0.030411039,-0.019443123,0.001963008,-0.005193142,0.010884825,-0.02127111,-0.025259443,0.032737568,0.00089322,0.003282066,0.001713737,-0.006439496,0.016867325,-0.031574301,0.031075761,-0.009970833,0.022600554,-0.023597637,-0.014956249,0.004009106,0.00198378,0.026588887,-0.023431456,-0.023763817,-0.013294443,-0.029746316,0.001381376,-0.042874578,-0.00913993,0.014873158,0.016202603,0.012878992,-0.006024044,0.009638472,0.010552464,-0.017033506,-0.027087428,0.044536386,-0.038055345,0.001329444,-0.019609304,0.023597637,-0.043206941,0.040049512,0.017615138,0.046862911,0.02127111,0.013294443,-0.039550968,-0.018861491,-0.019609304,-0.033734649,0.00623177,-0.017199686,0.041212775,-0.017781317,-0.024262359,0.054507218,-0.009721561,0.005816319,-0.00206687,-0.008766023,0.017365867,-0.000737426,0.018362951,-0.023597637,-0.019110762,0.021935832,0.041545134,-0.020357117,-0.017615138,0.044868745,-0.018030589,-0.032405205,-0.050186522,-0.014540797,0.005213914,-0.006688767,0.047527634,0.040714234
    };
    // Define the pipeline with vectorSearch query options
    mongocxx::pipeline stages;
    stages
        .append_stage(make_document(
            kvp("$vectorSearch",
                make_document(kvp("index", "vector_index"),
                              kvp("path", "plot_embedding_voyage_3_large"),
                              kvp("queryVector", vectors),
                              kvp("numCandidates", 150), kvp("limit", 10)))))
        .project(make_document(
            kvp("_id", 0), kvp("plot", 1), kvp("title", 1)));
    auto cursor = collection.aggregate(stages);
    for (auto&& doc : cursor) {
      std::cout << bsoncxx::to_json(doc) << std::endl;
    }
  } catch (const std::exception& e) {
    std::cout << "Exception: " << e.what() << std::endl;
  }
  return 0;
}

{ "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" }
{ "plot" : "A psychiatrist makes multiple trips through time to save a woman that was murdered by her brutal husband.", "title" : "Retroactive" }
{ "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." }
{ "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" }
{ "plot" : "After visiting 2015, Marty McFly must repeat his visit to 1955 to prevent disastrous changes to 1985... without interfering with his first trip.", "title" : "Back to the Future Part II" }
{ "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" }
{ "plot" : "Lyle, a motorcycle champion is traveling the Mexican desert, when he find himself in the action radius of a time machine. So he find himself one century back in the past between rapists, ...", "title" : "Timerider: The Adventure of Lyle Swann" }
{ "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" }
{ "plot" : "A romantic drama about a Chicago librarian with a gene that causes him to involuntarily time travel, and the complications it creates for his marriage.", "title" : "The Time Traveler's Wife" }
{ "plot" : "A modern aircraft carrier is thrown back in time to 1941 near Hawaii, just hours before the Japanese attack on Pearl Harbor.", "title" : "The Final Countdown" }

Este query utiliza la etapa $vectorSearch para:

Realizar una búsqueda vectorial de vecino más cercano aproximado (ANN)
Busque el término especificado en el campo plot_embedding_voyage_3_large
Establezca el número de vecinos más cercanos utilizados en la búsqueda en 150 utilizando la opción numCandidates
Devolver un máximo de 10 documentos de la consulta utilizando la opción limit

Utiliza la etapa $project para:

Incluya únicamente los campos de película plot y title en los resultados

Puntuación de búsqueda de vectores

El siguiente código realiza la misma consulta que en el ejemplo anterior, pero utiliza la etapa $project para generar solo el campo title y el metacampo vectorSearchScore, que describe qué tan bien coincide el documento con el vector de consulta:

// Define the pipeline with vectorSearch and project stages
mongocxx::pipeline score_pipeline;
score_pipeline
    .append_stage(make_document(
        kvp("$vectorSearch",
            make_document(kvp("queryVector", vectors),
                          kvp("index", "vector_index"),
                          kvp("path", "plot_embedding_voyage_3_large"),
                          kvp("numCandidates", 150),
                          kvp("limit", 10)))))
    .project(make_document(
        kvp("_id", 0),
        kvp("title", 1),
        kvp("score", make_document(kvp("$meta", "vectorSearchScore")))));
auto cursor = collection.aggregate(score_pipeline);
for (auto&& doc : cursor) {
  std::cout << bsoncxx::to_json(doc) << std::endl;
}

{ "title" : "About Time", "score" : 0.77101051807403564453 }
{ "title" : "Retroactive", "score" : 0.76004779338836669922 }
{ "title" : "A.P.E.X.", "score" : 0.7576859593391418457 }
{ "title" : "Timecop", "score" : 0.757656097412109375 }
{ "title" : "Back to the Future Part II", "score" : 0.75213932991027832031 }
{ "title" : "Thrill Seekers", "score" : 0.75099325180053710938 }
{ "title" : "Timerider: The Adventure of Lyle Swann", "score" : 0.75026416778564453125 }
{ "title" : "The Time Machine", "score" : 0.75025022029876708984 }
{ "title" : "The Time Traveler's Wife", "score" : 0.74949628114700317383 }
{ "title" : "The Final Countdown", "score" : 0.7469132542610168457 }

Opciones de búsqueda de vectores

Puede usar una etapa $vectorSearch para realizar diversos tipos de consultas de búsqueda vectorial de Atlas. Según la consulta deseada, puede especificar las siguientes opciones en la definición de la etapa:

Parámetro opcional	Tipo de dato	Descripción	Valor por defecto
`exact`	booleano	Especifica si se debe ejecutar una búsqueda de vecino más cercano exacto (`true`) o de vecino más cercano aproximado (`false`)	`false`
`filter`	Documento	Especifica un pre-filtro para los documentos a buscar.	Sin filtrado
`numCandidates`	Número	Especifica el número de vecinos más cercanos a utilizar durante la búsqueda	No limit

Para obtener más información sobre estas opciones, consulte la sección Campos de la $vectorSearch referencia del operador en la documentación de Atlas.

Información Adicional

Para aprender más sobre los conceptos mencionados en esta guía, consulta las siguientes entradas del manual del servidor:

Para obtener más información sobre el comportamiento del aggregate método, consulte la guía de agregación.

Documentación de la API

Para obtener más información sobre los métodos y tipos mencionados en esta guía, consulte la siguiente documentación de API:

agregar()

Volver

MongoDB búsqueda

Registro