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From "none none" <kor...@lycos.com>
Subject Re: document & field boosting
Date Mon, 29 Jul 2002 23:34:07 GMT
Doug , you are amazing!!
ciao.
--

On Mon, 29 Jul 2002 12:31:49  
 Doug Cutting wrote:
>FYI, I just added document and field boosting to Lucene.  It should be 
>in tonight's nightly build.
>
>This lets one, e.g., implement Google-like ranking, where a factor in a 
>document's score is determined independently from the text of the document.
>
>Longer term, I'd still like to open up document scoring, so that a user 
>can alter any part of the formula without altering Lucene's core code.
>
>Enjoy!
>
>Doug
>
>-------- Original Message --------
>Subject: Re: cvs commit: 
>jakarta-lucene/src/test/org/apache/lucene/search TestDocBoost.java
>Date: Mon, 29 Jul 2002 12:14:22 -0700
>From: Doug Cutting <cutting@lucene.com>
>Reply-To: "Lucene Developers List" <lucene-dev@jakarta.apache.org>
>To: Lucene Developers List <lucene-dev@jakarta.apache.org>
>References: <20020729191115.42343.qmail@icarus.apache.org>
>
>cutting@apache.org wrote:
> >   Log:
> >   msg.txt
>
>Oops.  That log entry was supposed to read:
>
>    Added support for boosting the score of documents and fields via the
>    new methods Document.setBoost(float) and Field.setBoost(float).
>
>    Note: This changes the encoding of an indexed value.  Indexes should
>    be re-created from scratch in order for search scores to be correct.
>    With the new code and an old index, searches will yield very large
>    scores for shorter fields, and very small scores for longer fields.
>    Once the index is re-created, scores will be as before.
>
>Doug
>
>
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>


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