[repost ]Indri Document Scoring

original:http://sourceforge.net/p/lemur/wiki/Indri%20Document%20Scoring/ Indri uses the language modeling approach to information retrieval. Language modeling assigns a probability value to each document, meaning that every score is a value between 0 and 1. For computational accuracy reasons, Indri returns the log of the actual probability value. log(0) equals negative infinity, and log(1) equals zero, so Indri document scores [...]



via WordPress http://blog.newitfarmer.com/ai/ai-ir/indri/13094/repost-indri-document-scoring#utm_source=rss&utm_medium=rss&utm_campaign=repost-indri-document-scoring