Metadata Filtering in RAG Vector Search
Post-filtering vector search silently drops good results. Here is pre-filter vs filtered ANN for RAG, why filtered HNSW is hard, and how to choose.
#Postgres(2)
RAG Vector Search in Postgres with pgvector
Store and query RAG embeddings inside Postgres with pgvector: HNSW indexing, distance operators, metadata filtering, hybrid search, and the tradeoffs I hit.