# Okapi BM25

> ranking function used by search engines

**Wikidata**: [Q2068750](https://www.wikidata.org/wiki/Q2068750)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Okapi_BM25)  
**Source**: https://4ort.xyz/entity/okapi-bm25


## References

1. Freebase Data Dumps. 2013