TF-IDF

Noun.  (context, information retrieval) A mathematical approximation to the importance of a particular word in a given piece of text.

This is an unmodified, but possibly outdated, definition from Wiktionary and used here under the Creative Commons license. Wiktionary is a great resource. If you like it too, please donate to Wikimedia.

This entry was last updated on RefTopia from its source on 3/20/2012.