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From Aditya Varun Chadha <adic...@gmail.com>
Subject Re: Use custom score in ConstantScoreQuery
Date Mon, 09 Dec 2019 09:45:38 GMT
By wrapping the constant score query inside a BoostQuery?

That’s how elasticsearch handles boosts on arbitrary queries, for example.

On Mon 9. Dec 2019 at 10:42, Stamatis Zampetakis <zabetak@gmail.com> wrote:

> Thanks for you reply Adrien!
> Can you clarify what is the second way?
> At the moment I haven't found a way (apart from creating my own Query
> classes) to say that a query will always return a score of 0.5 for each
> document.
>
> On Mon, Dec 9, 2019 at 8:16 AM Adrien Grand <jpountz@gmail.com> wrote:
>
> > Hi Stamatis,
> >
> > I personally like the current way things work. If we added the ability
> > to set a custom score on ConstantScoreQuery, then we'd end up with two
> > ways to do the same thing, which I like to avoid whenever possible.
> >
> > On Sun, Dec 8, 2019 at 10:07 PM Stamatis Zampetakis <zabetak@gmail.com>
> > wrote:
> > >
> > > Small reminder. Any input on this?
> > >
> > > Thanks,
> > > Stamatis
> > >
> > > On Mon, Dec 2, 2019 at 12:10 PM Stamatis Zampetakis <zabetak@gmail.com
> >
> > > wrote:
> > >
> > > > Hi all,
> > > >
> > > > Currently ConstantScoreQuery [1] returns a constant score equal to 1
> > for
> > > > every document that matches the query.
> > > >
> > > > I would like to use the ConstantScoreQuery but with a different score
> > > > value that I can pass explicitly (via the constructor for instance).
> > > >
> > > > This change may also benefit some other parts of Lucene where a
> > > > ConstantScoreQuery is wrapped around a BoostQuery simply for
> returning
> > a
> > > > score of zero [2][3].
> > > >
> > > > Does this change make sense? Shall I create a JIRA for it?
> > > >
> > > > Best,
> > > > Stamatis
> > > >
> > > > [1]
> > > >
> >
> https://github.com/apache/lucene-solr/blob/master/lucene/core/src/java/org/apache/lucene/search/ConstantScoreQuery.java
> > > > [2]
> > > >
> >
> https://github.com/apache/lucene-solr/blob/1d238c844e45f088a942aec14750c186c7a66d92/lucene/core/src/java/org/apache/lucene/search/BooleanQuery.java#L253
> > > > [3]
> > > >
> >
> https://github.com/apache/lucene-solr/blob/1d238c844e45f088a942aec14750c186c7a66d92/lucene/core/src/java/org/apache/lucene/search/BoostQuery.java#L97
> > > >
> >
> >
> >
> > --
> > Adrien
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> > For additional commands, e-mail: java-user-help@lucene.apache.org
> >
> >
>
-- 
Aditya Varun Chadha | http://www.adichad.com | +49 (0) 152 25914008 (M)

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