Displaying 1 result from an estimated 1 matches for "formula_coord".
2007 Jul 10
0
Article score calculations for Boolean and MultiTerm Queries, and customization options
...ing with different methods of
automatically generating queries and the scoring mechanisms behind Lucene
and Ferret have been perplexing us.
>From looking at the Lucene explanation at (
http://lucene.zones.apache.org:8080/hudson/job/Lucene-Nightly/javadoc/org/apache/lucene/search/Similarity.html#formula_coord)
and through using the explain function in Ferret it seems that the score
calculation for a boolean query is (in latex)
score = ( querynorm \times fieldnorm ) \sum_{term \in query}{
idf_{term}^{2} tf_{term} boost_{term}}
and the calculation for the score of a document matching a MultiTerm Query...