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From Naama Kraus <naamakr...@gmail.com>
Subject Re: Overriding Lucene's term weights computation
Date Thu, 24 Jun 2010 08:23:16 GMT
Great ! Thanks Dionisis.
Naama

On Thu, Jun 24, 2010 at 10:27 AM, Dionisis Koumouras <kumdio@gmail.com>wrote:

> Naama,
> I recently faced a similar problem. Overriding the way Lucene uses
> TermVectors seemed quite complex for me. I used the payloads mechanism
> instead so that I could store a float payload with each word. Then, I
> overloaded the similarity class to change the way results are scored, based
> on the payloads.
> This is the example I was hinted with through this list:
>
> http://www.lucidimagination.com/blog/2010/04/18/refresh-getting-started-with-payloads/
> I hope it helps you too
>
> Dionisis
>
> On Thu, Jun 24, 2010 at 9:19 AM, Naama Kraus <naamakraus@gmail.com> wrote:
>
> > 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 <yuvalf@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 [naamakraus@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-unsubscribe@lucene.apache.org
> > > For additional commands, e-mail: java-user-help@lucene.apache.org
> > >
> > >
> >
>

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