Bug Fixes

• Address a corner case with ivf_nprobe_pct query parameter (https://github.com/blevesearch/go-faiss/pull/34)
• Several guard rails put in place to avoid array-out-of-bounds-access and divide-by-zero errors: (https://github.com/blevesearch/zapx/pull/263, https://github.com/blevesearch/zapx/pull/270, https://github.com/blevesearch/zapx/pull/271, https://github.com/blevesearch/zapx/pull/273) to overcome https://github.com/blevesearch/bleve/issues/1662
• Handling early exits/optimization for boolean queries (https://github.com/blevesearch/bleve/pull/2065)

Improvements

• Vector search requires faiss dynamic library to be built from blevesearch/faiss@b747c55a which is a modified version of v1.8.0
• Support for cosine similarity distance metric to normalize vectors before indexing/querying for nearest neighbor search (https://github.com/blevesearch/bleve/pull/2051)
• Support for selectivity filters as a pre-cursor to vector search (https://github.com/blevesearch/bleve/pull/2063)

Milestone

• v2.4.3