Cosine Similarity vs Dot Product for Embeddings (2026)
June 30, 2026
Cosine similarity vs dot product for embeddings, with runnable TypeScript. Learn when to normalize, why they match for unit vectors, and which to pick.
#vector-search
pgvector HNSW Postgres 18 Production Tuning Tutorial 2026
May 16, 2026
Tune pgvector 0.8.2 HNSW indexes on PostgreSQL 18: ef_search, halfvec quantization, iterative scans, and parallel builds with a runnable Docker setup.
Embedding Models Compared: From Word2Vec to Modern Transformers
February 23, 2026
Embedding models compared: Word2Vec, GloVe, BERT, OpenAI text-embedding-3, Cohere v3, and open-source (BGE, E5). Dimensions, retrieval quality, and cost.