ML//RAG//FAISS

- Facebook AI Similarity Search: Meta's open-source library for efficient similarity search on dense vectors.

Facebook AI Similarity Search: Meta's open-source library for efficient similarity search on dense vectors.

Supports exact (brute-force), approximate (HNSW, IVF), and GPU-accelerated index types.

Product quantization (PQ) compresses vectors to dramatically reduce memory — search billions of vectors on one machine.

The reference implementation for vector search in research. Many production systems use FAISS internally.