Surface-Form Neural Sparse Retrieval: Robust Fuzzy Matching for Industrial Music Search

In three linesAmazon Music deploys a robust neural sparse retrieval system for large-scale music search. The system handles misspellings, transpositions, and phonetic variations with 91.4% recall@10 on 6M documents, outperforming trigrams (57.7%). Inference-free architecture with granular subword tokenization (max 3 chars) and zero online latency.

Summary generated by Claude — human-verified