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From: "Uwe Schindler" <uwe@thetaphi.de>
To: <java-user@lucene.apache.org>
References: <195795.51783.qm@web110205.mail.gq1.yahoo.com>
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In-Reply-To: <853701.73021.qm@web110209.mail.gq1.yahoo.com>
Subject: RE: Range Score in Lucene
Date: Tue, 27 Apr 2010 19:38:04 +0200
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This hast o do with combining multiple terms in a Boolean query. If you =
have only one term and no boost factors involved, you will get 1. I just =
repeat, the score numbers are arbitrary scale, only compareable within =
one query.

-----
Uwe Schindler
H.-H.-Meier-Allee 63, D-28213 Bremen
http://www.thetaphi.de
eMail: uwe@thetaphi.de


> -----Original Message-----
> From: Clara Vania [mailto:chubz_fun@yahoo.com]
> Sent: Tuesday, April 27, 2010 7:32 PM
> To: java-user@lucene.apache.org
> Subject: Re: Range Score in Lucene
>=20
> Really thanks for the quick reply,
>=20
> I want to find documents similar to one document (let's call it
> document A) in my index. To do this I use the MoreLikeThis class to
> help create query from document A. I also included document A in my
> index, so I assumed that I will have document A at the first rank. =
When
> I do the searching, I print out the top 10 documents along with their
> score. As I assumed before, I have document A in the first rank, but
> the score is above 1 (score=3D1.841656).
>=20
> I think lucene score have range [0..1] because it uses cosine
> similarity, where score 1 means that two documents are perfectly
> similar and 0 means that there are no similarity between two document,
> but why I get document score above 1?
>=20
>=20
>=20
> Thanks,
>=20
> -Clara
>=20
>=20
>=20


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