I don't know of anyone doing work on it in the Lucene community. My understanding to date is that it is not really worth trying, but that may in fact be an outdated view. I haven't stayed up on the literature on this subject, so background info on what you are interested in would be helpful.

Digging around in the archives a bit more, I come up with some more relevant emails: http://www.lucidimagination.com/search/?q=comparing+scores+across+searches#/ p:lucene,solr/s:email

What is the bigger problem that you are trying to solve? That is, you imply that score comparison is the solution, but you haven't said the problem you are trying to solve.

Cheers,
Grant


On Feb 25, 2009, at 11:38 AM, Ken Williams wrote:

Hi all,

I didn't get a response to this - not sure whether the question was
ill-posed, or too-frequently-asked, or just not interesting. But if anyone could take a stab at it or let me know a different place to look, I'd really
appreciate it.

Thanks,

-Ken


On 2/20/09 12:00 PM, "Ken Williams" <ken.willi...@thomsonreuters.com> wrote:

Hi,

Has there been any work done on getting confidence scores at runtime, so
that scores of documents can be compared across queries?  I found one
reference in the mailing list to some work in 2003, but couldn't find any
follow-up:

 http://osdir.com/ml/jakarta.lucene.user/2003-12/msg00093.html

Thanks.

--
Ken Williams
Research Scientist
The Thomson Reuters Corporation
Eagan, MN


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Grant Ingersoll
http://www.lucidimagination.com/

Search the Lucene ecosystem (Lucene/Solr/Nutch/Mahout/Tika/Droids) using Solr/Lucene:
http://www.lucidimagination.com/search


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