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From Andrzej Bialecki>
Subject Re: Contributing to Lucene (was RE: inter-term correlation [was R e: Vector Space Model in Lucene?])
Date Mon, 17 Nov 2003 15:25:55 GMT
Joe Paulsen wrote:

> Hope this isn't out of context - but Dan makes a very valid point.
> Besides the potential performance slowdown if NLP was always applied to
> a users query - there are times that an exact term match is desired
> without the "query expansion" that an NLP process normally requires.

Query expansion can (and I believe should) be done efficiently outside 
the core of search engine. After all, it's a process of changing the 
query according to some expansion/rewriting algorithms, but it is still 
the unchanged search engine that in the end has to answer the new query...

Best regards,
Andrzej Bialecki

Software Architect, System Integration Specialist
CEN/ISSS EC Workshop, ECIMF project chair
EU FP6 E-Commerce Expert/Evaluator
FreeBSD developer (

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