Learn what TF-IDF is, how it works, why it’s part of the SEO lexicon, and most importantly – whether Google uses it as a ranking factor.

So, TF-IDF for these terms gets higher and… voila! The machine knows what my article is about. Generally, TF-IDF is used when we need a machine to identify topics of a huge set of documents.

TF-IDF, short for term frequency–inverse document frequency, identifies the most important terms used in a given document. It is also one of the most ignored content optimization tools used by ...

Let tf*idf be your guide. Search marketers should worry less about making sure specific popular keywords are on their pages and think more about writing unique content.