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2023年6月mongodb新版发布增加了向量检索的功能，全面拥抱ai

创建向量索引

{
  "type": "vectorSearch,
  "fields": [{
    "path": "plot_embedding_hf",
    "dimensions": 384,
    "similarity": "dotProduct",
    "type": "vector"
  }]
}

RAG检索

query = "imaginary characters from outer space at war"

results = collection.aggregate([
  {"$vectorSearch": {
    "queryVector": generate_embedding(query),
    "path": "plot_embedding_hf",
    "numCandidates": 100,
    "limit": 4,
    "index": "PlotSemanticSearch",
      }}
});

for document in results:
    print(f'Movie Name: {document["title"]},\nMovie Plot: {document["plot"]}\n')

800_auto

官方教程

https://www.mongodb.com/developer/products/atlas/building-generative-ai-applications-vector-search-open-source-models/

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