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From calin014 <calin...@gmail.com>
Subject Re: Precision-recall curve with /contrib/benchmark/quality
Date Sat, 05 Jun 2010 21:17:28 GMT

Thanks a lot for your quick answer.

I modified the idf formula as you suggested, and got a small improvement.
Then I added coord() to scoring and the boost was pretty big :)

http://lucene.472066.n3.nabble.com/file/n873240/prcurve_bm25.png 

These tests are done on the ohsumed train corpus(i used coord on f2exp also)
http://lucene.472066.n3.nabble.com/file/n873240/prcurve.png 
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