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From Jinming Zhang <spee.zh...@gmail.com>
Subject Re: How to customize score according to field value?
Date Wed, 08 Apr 2009 15:01:16 GMT
Hi,

Yes, the CustomScoreQuery.customScore() can meet the requirement I
described.

Thank you all!

On Tue, Apr 7, 2009 at 9:01 PM, Tim Williams <williamstw@gmail.com> wrote:

> On Tue, Apr 7, 2009 at 3:08 AM, Jinming Zhang <spee.zhang@gmail.com>
> wrote:
> > Hi,
> >
> > I have the following situation which needs to customize the final score
> > according to field value.
> >
> > Suppose there are two docs in my query result, and they are ordered by
> > default score sort:
> >
> > doc1(field1:bookA, field2:2000-01-01) -- score:0.80
> > doc2(field1:bookB, filed2:2009-01-01) -- score:0.70
> >
> > I want "doc2" to have a higher score since it's publishing date is more
> > recent, while "doc1" to have a lower score:
> >
> > doc2(field1:bookB, filed2:2009-01-01) -- score:0.77
> > doc1(field1:bookA, field2:2000-01-01) -- score:0.73
> >
> > I found this scenario is different from doc.setBoost() and
> field.setBoost().
> > Is there any way to impact the score calculated for "doc1" & "doc2"
> > according to the value of "field2"?
> >
> > Thank you in advance!
>
> If you have access to the MEAP for Lucine In Action 2nd Edition, it
> demonstrates using a CustomScoreQuery[1] for to boost a docs score
> based on recency.
>
> --tim
>
> [1] -
> http://lucene.apache.org/java/2_4_0/api/org/apache/lucene/search/function/CustomScoreQuery.html
>
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