BM25 : The Most Important Text Metric in Data Science

This video is about 3 years old. Search advice changes quickly, so check this against current guidance.

About this video

TF-IDF has weaknesses, the presenter argues, and BM25 is built to answer them. The video lays out the problems first, then the BM25 formula.

Good to know: Aimed at data practitioners, not marketers

Why watch it

Starts from the problems with TF-IDF, then shows how BM25 deals with them. Aimed at people working with data, not at marketers.