Re: term frequency normalization

2009-02-12 Thread Chris Hostetter
: The easiest way to change the tf calculation would be overwriting : tf in an own implementation of Similarity like it's done in : SweetSpotSimilarity. But the average term frequency of the : document is missing. Is there a simple way to get or calc this : number? there was quite a bit of discus

term frequency normalization

2009-02-03 Thread Jochen Wersdörfer
Hi, i'd like to use the term frequency normalization described in http://wiki.apache.org/lucene-java/TREC%202007%20Million%20Queries%20Track%20-%20IBM%20Haifa%20Team so that the term frequency tf becomes tf(f, d) = log(1 + feq(t, d)) / log(1 + avgFreq(d)) The easiest way to change t

term frequency normalization

2009-02-03 Thread Jochen Wersdörfer
Hi, i'd like to use the term frequency normalization described in http://wiki.apache.org/lucene-java/TREC%202007%20Million%20Queries%20Track%20-%20IBM%20Haifa%20Team so that the term frequency tf becomes tf(f, d) = log(1 + feq(t, d)) / log(1 + avgFreq(d)) The easiest way to change t