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BM25 tuning: k1, b, analyzers and languages v1.0.0

Use this resource to tune BM25 lexical search for the language and the corpus

New

  • 307 downloads
  • 101 likes
  • 227 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install bm25-parameters-lexical-search

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent adjusts the BM25 parameters k1 and b, proposes per-field boosts and picks an analyzer suited to the language (French, Italian, German or other). It explains stemming versus lemmatization and tokenization pitfalls. You get justified settings and an Elasticsearch configuration.

Mostly picked by

Updated November 2, 2026

Card for the “BM25 tuning: k1, b, analyzers and languages” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
MIT

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What you get

  • SKILL.md: BM25 formula and default k1 and b values
  • SKILL.md: Elasticsearch similarity configuration and field boosts
  • SKILL.md: language analyzers, stopwords and tokenization pitfalls

Good fit for

  • Your internal search returns poorly ranked results for common words
  • You index French text and need a suitable analyzer

Not for

    Tags

    • bm25
    • lexical search
    • elasticsearch
    • analyzer

    About

    You say

    “Tune BM25 in Elasticsearch for a French catalogue: boost on the title, French stemming and k1 set to 1.2.”

    Card for the “BM25 tuning: k1, b, analyzers and languages” skill

    Skill published by claude-dev-suite under the MIT license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to tune BM25 lexical search for the language and the corpus
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1.1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md10.9 KB

    Origin and licence

    Listed unmodified

    Author
    claude-dev-suite
    Source
    github.com/claude-dev-suite/claude-dev-suite/tree/e10ab644ba43abe2abc923399226df4af7337214/skills/retrieval/bm25-tuning
    Licence
    MIT

    Notice

    « bm25-tuning » (claude-dev-suite, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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