> since Lucene doesn't
> currently support negative boosts
See here for an approach to negative boosts:
http://wiki.apache.org/jakarta-lucene/CommunityContributions
Cheers
Mark
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Others can correct me if I am wrong, but I don't think a "pure" Rochio
feedback loop is possible in the current state, since Lucene doesn't
currently support negative boosts
(http://lucene.apache.org/java/docs/queryparsersyntax.html). Having
said that, what we do, in a nutshell is similar to w
Stefan Gusenbauer <[EMAIL PROTECTED]> writes:
> Is there an add on for lucene to get a real vector representation?
> Does anyone has experiences with this issue?
No code, but some small thinking. You can do hacks with boosts and
whatnot, but I think in the end you really want a new Query subclas
I've some thoughts about Lucene and Relevance Feedback. I want to
implement some variation of the Roccio Formula and there is the problem.
The formula is like this:
Query(new) = alpha * Query(old) + beta * Sum(Relevant Documents) - gamma
* Sum(Non Relevant Documents)
The relevant documents in
