Mailing-List: contact java-user-help@lucene.apache.org; run by ezmlm
Precedence: bulk
Reply-To: java-user@lucene.apache.org
Received-SPF: pass (herse.apache.org: domain of deinspanjer@gmail.com
 designates 66.249.90.177 as permitted sender)
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=beta;
        h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references;
        b=MpbzSnHnKqUBxB3BUsUBU2mEAfW4AT+dVbqvTydh+dewsJ/+LXoptee8N0Y0r6vkxMSRuio0Fu8TVIgVUe0gUpRuEsfSNRq1EWJRackpHxABcot/JR775b/GmpqETa4HjuLHYguYtHd48y4hb8XKf71ghGNqlJVcluvKHDFwb5g=
Message-ID: <f81fa4180705171754q3ded8418t5055b91654585a9@mail.gmail.com>
Date: Thu, 17 May 2007 20:54:02 -0400
From: "Daniel Einspanjer" <deinspanjer@gmail.com>
To: java-user@lucene.apache.org
Subject: Re: Is it possible to use a custom similarity class to cause extra
 terms in a field to lower score?
In-Reply-To: <Pine.LNX.4.58.0705171631500.20135@hal.rescomp.berkeley.edu>
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
References: <f81fa4180705171546j43782f6dqecdae461f538cc98@mail.gmail.com>
	 <Pine.LNX.4.58.0705171631500.20135@hal.rescomp.berkeley.edu>

Oops.  I do indeed have omitNorms turned on.  I will re-read the
documentation on it and look at turning it off.

Sorry for the bother. :/

On 5/17/07, Chris Hostetter <hossman_lucene@fucit.org> wrote:
>
> : Terminator 2
> : Terminator 2: Judgment Day
> :
> : And I score them against the query +title:(Terminator 2)
>
> : Would there be some method or combination of methods in Similarity
> : that I could easily override to allow me to penalize the second item
> : because it had "unused terms"?
>
> that's what the DefaultSimilarity does, it uses the (length)norm
> information stored when the documents are indexed to know which one is a
> better match (because it matches on a shorter field)
>
> I you aren'tseeing that behavior then perhaps you turned omitNorms for
> that field, or perhaps the byte encoding is making the distinction between
> your various terms too small -- overriding the lengthNorm function and
> reindexing might help.
>
>
>
> -Hoss
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> For additional commands, e-mail: java-user-help@lucene.apache.org
>
>

---------------------------------------------------------------------
To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
For additional commands, e-mail: java-user-help@lucene.apache.org