Semantic Search

Postgres extension adding vector types plus exact and approximate nearest neighbor search with HNSW and IVFFlat indexes. Supports single, half, binary, and sparse vectors with L2, inner product, cosine, L1, Hamming, and Jaccard distances for embeddings and RAG retrieval.

RAG | C · vector-search · embeddings

Collection of Jupyter notebooks and example apps showing AI-powered search with Elasticsearch as a vector database. Covers RAG, hybrid/semantic search, LangChain and OpenAI integrations, and document chunking for LLM applications.

RAG | Jupyter Notebook · vector-search · semantic-search