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From Doron Cohen <DOR...@il.ibm.com>
Subject Re: Questions about Lucene scoring (was: Lucene 1.2 - scoring formula needed)
Date Sun, 10 Dec 2006 21:12:29 GMT
TheRanger@gmx.net wrote:
> According to these sources, the Lucene scoring formula in version 1.2 is:
>
> score(q,d) = sum_t(tf_q * idf_t / norm_q * tf_d * idf_t / norm_d_t *
> boost_t) * coord_q_d

Hi Karl,

A slightly more readable version of (the same) scoring formula is now in
Lucene's Similarity jdocs -
http://lucene.apache.org/java/docs/api/org/apache/lucene/search/Similarity.html
 - I think the explanations there would also answer at least some of your
questions.


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