[repost ]Indri Document Scoring

original:http://ift.tt/17NZsie 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 […]



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