Retrieval6 min read
Why RRF beats score mixing for hybrid search
Cosine similarity and BM25 live on incomparable scales. Reciprocal Rank Fusion fuses rankings instead — and never needs re-tuning.
Leela Desai
June 24, 2026
Blog
Engineering notes from the retrieval frontier
Deep-dives on hybrid search, chunking strategies, grounded generation, and everything we learn running RAG in production.
Ingestion7 min read
Chunking strategies compared: what actually moves precision
Fixed-window, recursive, and semantic chunking measured across four corpora — with the overlap rule we keep coming back to.
Leela Desai
May 30, 2026
Generation5 min read
Grounded generation: making citations exact, not decorative
Citations as structural indexes, sources that stream first, and the prompt-injection line every RAG system needs to draw.
Leela Desai
May 8, 2026