Naama, AFAIK, payloads store an arbitrary byte array per position (see http://www.lucidimagination.com/blog/2009/08/05/getting-started-with-payloads/ and http://www.lucidimagination.com/blog/2010/04/18/refresh-getting-started-with-payloads/) You define what you put in the payload during indexing, and how to use it during retrieval. It seems like you want to replace the default term vectors. Payloads are an additional mechanism, on top of the term vectors. This means that implementing payloads will have a memory and a run time cost. If you have no use for the original term vectors it makes more sense to replace them using flex indexing, Because the data structures and algorithms for handling term vectors are more near the core of Lucene. Hope this makes sense, Yuval
-----Original Message----- From: Naama Kraus [mailto:naamakr...@gmail.com] Sent: Thursday, June 24, 2010 9:19 AM To: java-user@lucene.apache.org Subject: Re: Overriding Lucene's term weights computation ok, thanks Yuval. I'll take a look. Could you (or anyone) please elaborate why payloads "seem like a worse fit" ? TX, Naama On Wed, Jun 23, 2010 at 11:00 PM, Yuval Feinstein <yuv...@answers.com>wrote: > Naama, Maybe you could use the new flexible indexing mechanism. > Some information is in this lecture: > > http://lucene-eurocon.org/slides/Lucene-Forecast-Version-Unicode-Flex-and-Mod_Willnauer&Schindler.pdf > Alternatively, you may use payloads, but they seem like a worse fit. > Good Luck, > Yuval > > ________________________________________ > From: Naama Kraus [naamakr...@gmail.com] > Sent: Wednesday, June 23, 2010 1:38 PM > To: java-user@lucene.apache.org > Subject: Overriding Lucene's term weights computation > > Hi, > > Is there a way for an application to index a document along with its "term > weighted vector" (Lucene's TermFreqVector). I.e., override the term > frequencies computed by Lucene, with an application's computed term weights > (non frequency based) ? > I don't think I want to use Scorer#score() for applying score changes as > this one is activated at search time which won't work for me. > > Thanks for any insight, > Naama > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > > --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
