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Subject: RE: Hit Score
Date: Wed, 10 Aug 2005 11:57:36 -0700
Message-ID: <D1EFB337111B674B8F1BE155B01C6DD64087EE@franklin.corp.dessci>
Thread-Topic: Hit Score
thread-index: AcWd00vpZVbDjpODTLKxm2kRSOhfjQACZNWA
From: "Rajesh Munavalli" <rajeshm@dessci.com>
To: <java-dev@lucene.apache.org>

Hi Erik,
         This is what I see in explaination...

* 0.30685282 =3D fieldWeight(contents:test in 0), product of:
          o 1.0 =3D tf(termFreq(contents:test)=3D1)
          o 0.30685282 =3D idf(docFreq=3D1)
          o 1.0 =3D fieldNorm(field=3Dmrow, doc=3D0)=20

          I try to reason why the idf is 0.30685282 but couldn't really
figure out why. Is this the expected value for IDF?

Thanks,

Rajesh Munavalli

-----Original Message-----
From: Erik Hatcher [mailto:erik@ehatchersolutions.com]=20
Sent: Wednesday, August 10, 2005 12:42 PM
To: java-dev@lucene.apache.org
Subject: Re: Hit Score

On Aug 10, 2005, at 11:51 AM, Rajesh Munavalli wrote:
> I indexed a single document containing only one word. When I search=20
> for the same word I get a hit score of "0.3". Shouldn't I be getting=20
> "1.0"?

Try out IndexSearcher.explain() to see why.   There are numerous =20
factors involved.

     Erik

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