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Anserini Release Notes (v2.1.0)

  • Release date: May 14, 2026
  • Lucene version: Lucene 10.4.0

Summary of Changes

  • Upgraded BEIR to prebuilt BGE flat vector indexes with Lucene 10.4.0.
  • Reorganized documentation to increase legibility to agents.
  • Reorganized resolution of cache directory.
  • Reorganized and improved agent skills.
  • Refactored and cleaned up tests.
  • Added GetDocument CLI.
  • Added EncodeQuery CLI.
  • Added REST index alias configuration support.
  • Added support for NanoKnow.
  • Added support for RAG 25.
  • Renamed catalog CLIs to registries.
  • Reduced fatjar size by excluding native debug symbols.
  • Removed obsolete regression scripts.

Known Issues

  • anserini-tools#109 recreated BGE cached queries for BEIR. This results in minor differences with reproductions from raw document collections with the cached queries.

Contributors (This Release)

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