Show HN: DuckDB community extension for prefiltered HNSW using ACORN-1
Summary
The article presents a fork of DuckDB-VSS that adds ACORN-1 filtered HNSW search, pushing predicates into graph traversal to improve recall for filtered queries. It enumerates changes, configuration options, benchmarks, and usage instructions, making it a practical resource for implementing accelerated, filtered vector search inside DuckDB.