The Lucene PMC is pleased to announce the release of Apache Lucene 9.1.0. Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.
This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at: https://lucene.apache.org/core/downloads.html Lucene 9.1.0 Release Highlights New features - Lucene JARs are now proper Java modules, with module descriptors and dependency information - Support for filtering in nearest-neighbor vector search - Support for intervals queries in the standard query syntax - A new token filter SpanishPluralStemFilter for precise stemming of Spanish plurals Optimizations - Up to 30% improvement in index throughput for high-dimensional vectors - Up to 10% faster nearest neighbor searches on high-dimensional vectors - Faster execution of "count" searches across different query types - Faster counting for taxonomy facets - Several other search speed-ups, including improvements to PointRangeQuery, MultiRangeQuery, and CoveringRangeQuery Other - The test framework is now a module, so all classes have been moved from to org.apache.lucene.tests.* to avoid package name conflicts - Lucene now faithfully implements the HNSW algorithm for nearest neighbor search by supporting multiple graph layers … plus a number of helpful bug fixes! Further details of changes are available in the change log available at: http://lucene.apache.org/core/9_1_0/changes/Changes.html and the migration guide available at: https://lucene.apache.org/core/9_1_0/MIGRATE.html Please report any feedback to the mailing lists (http://lucene.apache.org/core/discussion.html) -- Adrien --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
