Group: BM25F

BM25 with different parameters for different fields, including an incoming anchortekst. The weight of the text of the links included on the page is normalized depending on Delta Page Rank links

Unigramal language model. Language is modeling according to the document, smoothed out by the general linguistic model. When building a model, the document uses information on which field of the document met the word request (Title, Head or Plain Text)

BM25FDPR with standardization on the average length of the document, depending on the language of the document. ((http://wiki.yandex-team.ru/bm25frework test results.))

BM25FDPR with standardization on the average length of the document, depending on the language of the document. Only texts are used.