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From "Julien Nioche" <Julien.Nio...@lingway.com>
Subject Re: Similarity - position in Field[] effects scoring - how to change?
Date Tue, 23 Mar 2004 16:03:34 GMT
Joachim,

Why don't you use the method explain of IndexSearcher?
http://jakarta.apache.org/lucene/docs/api/org/apache/lucene/search/IndexSear
cher.html

This is the best way to find why your documents are different. I suspect the
lengthNorm  method, which is used at indexation time.

Julien


----- Original Message -----
From: "Joachim Schreiber" <yoschr@web.de>
To: <lucene-user@jakarta.apache.org>
Sent: Tuesday, March 23, 2004 4:05 PM
Subject: Similarity - position in Field[] effects scoring - how to change?


> Hallo,
>
> I run in following problem. Perhaps somebody can help me.
>
> I have a index with different ids in the same field
> something like
>
> <s>00000000
> <s>45678565
> <s>87854546
>
> Situation: I have different documents with the entry <s>00000000 in the
same
> index.
>
>
> document 1)
>
> <s>324235678565
> <s>324dssd5678565
> <s>45678324565
> <s>00000000
> <s>8785454324326
>
>
> document 2)
>
> <s>324235678565
> <s>00000000
> <s>45678324565
> <s>8785454324326
>
>
>
> when I search for "  s:00000000 "  I receive both docs, but document 1 has
a
> better scoring than document 2.
> The position of <s>00000000 in doc 1 is Field[4] and in doc 2 it's
Field[2],
> so this seems to effect scoring.
>
> How can I disable this behaviour, so doc 1 has the same scoring as doc
2???
> Which method do I have to overwrite in DefaultSimilarity.
> Has anybody any idea, any help.
>
> Thanks
>
> yo
>
>
>
>
>
>
>
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