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From Erik Hatcher <e...@ehatchersolutions.com>
Subject Re: tf=0 while lucene is finding matches?
Date Tue, 24 May 2005 15:28:25 GMT
My hunch is that you're not using the document id in your calls to  
IndexSearcher.explain().  You don't pass the hit index number.

     Erik


On May 24, 2005, at 11:13 AM, M. Mokotov wrote:

> OK, I think I'm missing something big time...
> Can someone point me to the documentation of the explain?
>
> Thanks a lot,
> M
>
> -----Original Message-----
> From: M. Mokotov [mailto:mk@mokotov.org]
> Sent: Tuesday, May 24, 2005 4:46 PM
> To: 'java-user@lucene.apache.org'
> Subject: tf=0 while lucene is finding matches?
>
>
> Hi,
>
> Anyone knows what is exactly Similarity.tf()?
> I understood it's term frequency on a document.
> Still, when I'm searching for a string a document contains, and the
> Explain().toString() shows tf=0.
>
>
> search string: "SubTitle:(Without)"
> matching documents: 3
>
> 0: 1.0: "Dropping Out," Drifting Off, Being Excluded: Becoming  
> Somebody
> Without School
> 0.0 = fieldWeight(SubTitle:without in 0), product of:
>   0.0 = tf(termFreq(SubTitle:without)=0)
>   7.214108 = idf(docFreq=3)
>   0.5 = fieldNorm(field=SubTitle, doc=0)
>
>
>
> 1: 0.625: "I Have A Life" Bride's Guide: Plan The Wedding You've  
> Always
> Wanted--without Losing Your Mind
> 0.0 = fieldWeight(SubTitle:without in 1), product of:
>   0.0 = tf(termFreq(SubTitle:without)=0)
>   7.214108 = idf(docFreq=3)
>   7.5161928E9 = fieldNorm(field=SubTitle, doc=1)
>
>
> 2: 0.625: 1 Microsoft Way: A Cookbook to Breaking Bill Gates Windows
> Monopoly Without Breaking Windows
> 0.0 = fieldWeight(SubTitle:without in 2), product of:
>   0.0 = tf(termFreq(SubTitle:without)=0)
>   7.214108 = idf(docFreq=3)
>   7.5161928E9 = fieldNorm(field=SubTitle, doc=2)
>
>
>


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