Fuzzy Name Matching

Fast many-to-many fuzzy entity matching: char n-gram TF-IDF + sparse top-k cosine similarity (the ING banks recipe). Scales to ~10⁵ × 10⁵ on a laptop in seconds, ~10⁶ × 10⁶ with chunking.

The full recipe — code, threshold guide, gotchas, alternatives considered — is in references/fuzzy-name-matching.md. Read it before writing match code; a runnable template is in examples/fuzzy_name_match_sample.py.