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Posted to java-user@lucene.apache.org by "Kevin L. Cobb" <ke...@emergint.com> on 2003/06/17 13:43:10 UTC
Weighted Search by Field using MultiFieldQueryParser
I have an index that has three fields in it. When I do a search using
MultiFieldQueryParser, the search applies the same importance (weight)
to each of the fields. BUT, what if I want to apply a different weight
to each field, i.e. I want to consider found terms from certain fields
as less "important" than others. I have applied an algorithm to help me
do this, which involves searching each field separately and then
recombining the results into a single collection, but hate to reinvent
the wheel if I don't have to.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Kevin L Cobb, MT(ASCP), SCJP2
Senior Software Engineer
Emergint, Inc.
501 E Broadway, Suite 250
Louisville, KY 40202
Kevin.Cobb@emergint.com
502.852.1423
502.852.1589 fax
The preceding e-mail message and attachments, if any, contains
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Re: Weighted Search by Field using MultiFieldQueryParser
Posted by Tatu Saloranta <ta...@hypermall.net>.
On Tuesday 17 June 2003 05:43, Kevin L. Cobb wrote:
> I have an index that has three fields in it. When I do a search using
> MultiFieldQueryParser, the search applies the same importance (weight)
> to each of the fields. BUT, what if I want to apply a different weight
> to each field, i.e. I want to consider found terms from certain fields
> as less "important" than others. I have applied an algorithm to help me
> do this, which involves searching each field separately and then
> recombining the results into a single collection, but hate to reinvent
> the wheel if I don't have to.
Have you looked at MultiFieldQueryParser source? It's a very simple class, and
modifying it (making a new class) should be easy; pass in not only field names
but also weights to apply?
(as a sidenote, MultiFieldQueryParser does some unnecessary work as is... it
seems to re-parse same query once for each field, could just clone it)
-+ Tatu +-
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Re: Weighted Search by Field using MultiFieldQueryParser
Posted by Otis Gospodnetic <ot...@yahoo.com>.
Didn't I reply to this yesterday?
--- "Kevin L. Cobb" <ke...@emergint.com> wrote:
> I have an index that has three fields in it. When I do a search using
> MultiFieldQueryParser, the search applies the same importance
> (weight)
> to each of the fields. BUT, what if I want to apply a different
> weight
> to each field, i.e. I want to consider found terms from certain
> fields
> as less "important" than others. I have applied an algorithm to help
> me
> do this, which involves searching each field separately and then
> recombining the results into a single collection, but hate to
> reinvent
> the wheel if I don't have to.
>
>
>
>
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> Kevin L Cobb, MT(ASCP), SCJP2
>
> Senior Software Engineer
>
> Emergint, Inc.
>
> 501 E Broadway, Suite 250
>
> Louisville, KY 40202
>
> Kevin.Cobb@emergint.com
>
> 502.852.1423
>
> 502.852.1589 fax
>
>
>
>
>
> The preceding e-mail message and attachments, if any, contains
> information that is confidential and qualifies as such under the
> Definition of Confidential Information in the Non-Disclosure
> Agreement,
> and may constitute non-public information and trade secrets. It is
> intended to be conveyed only to the designated recipient(s). If you
> are
> not an intended recipient of this message, please notify the sender
> at
> 502-852-1605.
>
>
>
>
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