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Posted to java-user@lucene.apache.org by Sven Fischer <in...@linux4tw.de> on 2009/08/26 11:57:54 UTC
how to down-weight synonyms
Hi,
I implemented a synonym search by using the chapter 4.6's example from
the Lucene in Action book.
Now I want to extend the example in that way, that synonyms are boosted
less that the original word the user searched for. Is there a way to do
it? If it is, I would like to get any help on how to implement that feature.
can anyone help please?
Thanks
Sven
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Re: how to down-weight synonyms
Posted by abhay kumar <ab...@gmail.com>.
Hi,
The first answer by Sven is more efficient and generaly used.
Abhay
@Sven
f you add the synonyms at query time you can assign a boost factor to
the added synonyms that would boost the matches to a particular term
down. -> something in the interval [0,1]
On Wed, Aug 26, 2009 at 3:40 PM, Simon Willnauer <
simon.willnauer@googlemail.com> wrote:
> Hi Sven,
> While I have no idea bout the example in LiA I can give you some
> quick pointers.
> if you add the synonyms at query time you can assign a boost factor to
> the added synonyms that would boost the matches to a particular term
> down. -> something in the interval [0,1]
> if you add the synonyms at index time you could add a payload to the
> added synonyms and use some payload aware query for searches. See
>
> http://lucene.apache.org/java/2_4_0/api/core/org/apache/lucene/search/payloads/package-summary.html
>
> You could also index the content into two different fields on with and
> one without synonyms and set boost factors on the field. This case
> would be a little more complex and rather "dirty" but maybe its an
> option for you.
>
> simon
>
>
> On Wed, Aug 26, 2009 at 11:57 AM, Sven Fischer<in...@linux4tw.de> wrote:
> > Hi,
> > I implemented a synonym search by using the chapter 4.6's example from
> the
> > Lucene in Action book.
> > Now I want to extend the example in that way, that synonyms are boosted
> less
> > that the original word the user searched for. Is there a way to do it? If
> it
> > is, I would like to get any help on how to implement that feature.
> >
> > can anyone help please?
> >
> >
> > Thanks
> > Sven
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> > For additional commands, e-mail: java-user-help@lucene.apache.org
> >
> >
>
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> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> For additional commands, e-mail: java-user-help@lucene.apache.org
>
>
Re: how to down-weight synonyms
Posted by Simon Willnauer <si...@googlemail.com>.
Hi Sven,
While I have no idea bout the example in LiA I can give you some
quick pointers.
if you add the synonyms at query time you can assign a boost factor to
the added synonyms that would boost the matches to a particular term
down. -> something in the interval [0,1]
if you add the synonyms at index time you could add a payload to the
added synonyms and use some payload aware query for searches. See
http://lucene.apache.org/java/2_4_0/api/core/org/apache/lucene/search/payloads/package-summary.html
You could also index the content into two different fields on with and
one without synonyms and set boost factors on the field. This case
would be a little more complex and rather "dirty" but maybe its an
option for you.
simon
On Wed, Aug 26, 2009 at 11:57 AM, Sven Fischer<in...@linux4tw.de> wrote:
> Hi,
> I implemented a synonym search by using the chapter 4.6's example from the
> Lucene in Action book.
> Now I want to extend the example in that way, that synonyms are boosted less
> that the original word the user searched for. Is there a way to do it? If it
> is, I would like to get any help on how to implement that feature.
>
> can anyone help please?
>
>
> Thanks
> Sven
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> For additional commands, e-mail: java-user-help@lucene.apache.org
>
>
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