Thanks for the reply. Actually what I'm looking for is to have a kind of fuzzy memberships for the terms of a document. That is, for each term of a document, I will have a membership value for that term and each term will be in each document, at most once.
For that, I will need float TF and IDF values. It seems that Lucene does not support what I need and I should change Lucene's code which is not an easy task. Do you have any suggestions for me? Best, Reza hossman wrote: > > > : I was wondering why TF method gets a float parameter. Isn't frequency > : always considered to be integer? > : > : public abstract float tf(float freq) > > Take a look at how PhraseQuery and SPanNearQuery use tf(float). > > For simple terms (and TermQuery) tf is always an integer, but when dealing > with phrases the concept of a "sloppy match" (ie: a phrase with a gap in > the middle) results in a fractional "frequency" value because it is not as > good as an "exact" match on the phrase (which does result in an integer tf > value) > > > > > -Hoss > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > > > -- View this message in context: http://old.nabble.com/Why-is-frequency-a-float-number-tp27714523p27785693.html Sent from the Lucene - Java Users mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
