Retrieval Metrics Demystified: From BM25 Baselines to EM@5 & Answer F1
What BM25, Recall@k, answer-in-context rate and token F1 actually measure, which number to fix first, and how to compute them without fooling yourself.
Retrieval and RAG01
Series · 2 parts · 2,024–2,025
Retrieval and RAG
Which retrieval numbers actually matter, and a reproducible way to find out which stack to build on.