if you need the number of docs in which a given term appears you can use the method docfreq http://jakarta.apache.org/lucene/docs/api/org/apache/lucene/index/IndexReader.html#docFreq(org.apache.lucene.index.Term)
otherwise you can use http://jakarta.apache.org/lucene/docs/api/org/apache/lucene/index/IndexReader.html#termDocs(org.apache.lucene.index.Term) to count the total number of occurences using the TermDocs object ----- Original Message ----- From: "ABDOU Samir" <[EMAIL PROTECTED]> To: "Lucene Developers List" <[EMAIL PROTECTED]> Sent: Wednesday, August 04, 2004 2:25 PM Subject: RE: Term Collection Frequency? What about the frequency of any given term in the whole collection!? Calculate this at runtime may affect considerably performance! Thanks, -----Message d'origine----- De : Erik Hatcher [mailto:[EMAIL PROTECTED] Envoyé : mercredi, 4. août 2004 12:25 À : Lucene Developers List Objet : Re: Term Collection Frequency? The new term vector feature will give you this exact information for a particular document or field. Erik On Aug 4, 2004, at 3:59 AM, ABDOU Samir wrote: > Hi, > > In order to implement a new search model within Lucene (probabilistic), > I need a collection frequency of each term (the number of occurrences > of > a term within a collection). So, what would be the best way to > implement > this? > > Any suggestions, ideas... are welcome. > > Thanks, > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
