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From José Ramón Pérez Agüera <jose.agu...@gmail.com>
Subject Re: problem in Lucene's ranking function
Date Thu, 06 May 2010 21:34:43 GMT
thank you very much for your answer, but even trying to solve the
problem at the boolean layer, the problem remains at ranking function,
therefore the quality of the ranking would be very low, since term
frequency function is not computed properly.

jose

On Wed, May 5, 2010 at 4:11 PM, Yonik Seeley <yonik@lucidimagination.com> wrote:
> 2010/5/5 José Ramón Pérez Agüera <jose.aguera@gmail.com>:
> [...]
>> The consequence is that a document
>> matching a single query term over several fields could score much
>> higher than a document matching several query terms in one field only,
>
> One partial workaround that people use is DisjunctionMaxQuery (used by
> "dismax" query parser in Solr).
> http://lucene.apache.org/java/2_0_0/api/org/apache/lucene/search/DisjunctionMaxQuery.html
>
> -Yonik
> Apache Lucene Eurocon 2010
> 18-21 May 2010 | Prague
>
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-- 
Jose R. Pérez-Agüera

Clinical Assistant Professor
Metadata Research Center
School of Information and Library Science
University of North Carolina at Chapel Hill
email: jaguera@email.unc.edu
Web page: http://www.unc.edu/~jaguera/
MRC website: http://ils.unc.edu/mrc/

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