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From jian chen <chenjian1...@gmail.com>
Subject Re: Retrieval model used by Lucene
Date Mon, 04 Jul 2005 17:05:11 GMT
Well, I guess Lucene's Span query uses the Cover Density based model
(proximity model). However, it is within the framework of the TF*IDF
as well.

Jian

On 7/4/05, Dave Kor <s0454888@sms.ed.ac.uk> wrote:
> Quoting muetze303@gmx.li:
> 
> > Hi everybody,
> >
> > which kind of retrieval model is lucene using? Is it a simple vector model,
> > a extended boolean model or another model? A reliable source with
> > information about it would be fine, cause every source i found is telling
> > something different. :)
> >
> 
> Lucene uses the standard vector space model, basically TF*IDF.
> 
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