you're describing ad-hoc solutions to a problem that have an effect, but not one that 
is easily predictable. one can concoct all sorts of combinations of the query 
operators that would have something of the effect that i am describing. crossing 
sentence boundaries, however, can't be done without having some sentence boundaries as 
a reference. on top of this, there is a relatively simple concept which, if 
implemented, takes away all the ad-hocness of the solutions and replaces it with a 
something that is both linguistically and mathematically sound and on top of which 
won't materially make the engine core more complicated. that concept is that multiword 
queries are mostly multiword terms and they can't cross sentence boundaries according 
to the rules of English.

Herb....

-----Original Message-----
From: Doug Cutting [mailto:[EMAIL PROTECTED]
Sent: Friday, November 14, 2003 3:33 PM
To: Lucene Users List
Subject: Re: inter-term correlation [was Re: Vector Space Model in Lucene?]


Certainly there are lots of scoring algorithms that one cannot easily 
implement with Lucene.  I'm just not yet clear on what you need to do 
that Lucene cannot support.

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