##  [Okapi BM25](/okapi-bm25) 

  ##  [Okapi BM25](https://information.quantumdictionary.io/okapi-bm25-0) 

  

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**Information & Communication Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A family of bag-of-words term‑weighting ranking functions that score a document for a query by combining term frequency saturation, inverse document frequency weighting, and document‑length normalization, typically controlled by tunable parameters (commonly k1 and b).