Re: Use custom score in ConstantScoreQuery
Many thanks for the replies. Intuitively, I was hoping that this could be done with a single query class especially since ConstantScoreQuery seems to be made for that. I've seen the pattern of wrapping a BoostQuery around a ConstantScoreQuery but this seemed to me like a workaround. Anyways, I understand that finally this is a well adopted pattern so I am not going to insist more on this. Best, Stamatis On Mon, Dec 9, 2019 at 10:50 AM Uwe Schindler wrote: > Hi, > > Just add a BoostQuery with a boost factor of 0.5 around the > ConstantScoreQuery. It's just one line more in your code. I don't > understand why we would need separate query classes for this. > > Uwe > > - > Uwe Schindler > Achterdiek 19, D-28357 Bremen > https://www.thetaphi.de > eMail: u...@thetaphi.de > > > -Original Message- > > From: Stamatis Zampetakis > > Sent: Monday, December 9, 2019 10:42 AM > > To: java-user@lucene.apache.org > > Subject: Re: Use custom score in ConstantScoreQuery > > > > 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 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 > > > > > wrote: > > > > > > > > Small reminder. Any input on this? > > > > > > > > Thanks, > > > > Stamatis > > > > > > > > On Mon, Dec 2, 2019 at 12:10 PM Stamatis Zampetakis > > > > > > 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/Constant > > ScoreQuery.java > > > > > [2] > > > > > > > > https://github.com/apache/lucene- > > solr/blob/1d238c844e45f088a942aec14750c186c7a66d92/lucene/core/src/ja > > va/org/apache/lucene/search/BooleanQuery.java#L253 > > > > > [3] > > > > > > > > https://github.com/apache/lucene- > > solr/blob/1d238c844e45f088a942aec14750c186c7a66d92/lucene/core/src/ja > > va/org/apache/lucene/search/BoostQuery.java#L97 > > > > > > > > > > > > > > > > > -- > > > Adrien > > > > > > - > > > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > > > For additional commands, e-mail: java-user-h...@lucene.apache.org > > > > > > > > > - > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > >
RE: Use custom score in ConstantScoreQuery
Hi, Just add a BoostQuery with a boost factor of 0.5 around the ConstantScoreQuery. It's just one line more in your code. I don't understand why we would need separate query classes for this. Uwe - Uwe Schindler Achterdiek 19, D-28357 Bremen https://www.thetaphi.de eMail: u...@thetaphi.de > -Original Message- > From: Stamatis Zampetakis > Sent: Monday, December 9, 2019 10:42 AM > To: java-user@lucene.apache.org > Subject: Re: Use custom score in ConstantScoreQuery > > 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 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 > > > wrote: > > > > > > Small reminder. Any input on this? > > > > > > Thanks, > > > Stamatis > > > > > > On Mon, Dec 2, 2019 at 12:10 PM Stamatis Zampetakis > > > > 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/Constant > ScoreQuery.java > > > > [2] > > > > > > https://github.com/apache/lucene- > solr/blob/1d238c844e45f088a942aec14750c186c7a66d92/lucene/core/src/ja > va/org/apache/lucene/search/BooleanQuery.java#L253 > > > > [3] > > > > > > https://github.com/apache/lucene- > solr/blob/1d238c844e45f088a942aec14750c186c7a66d92/lucene/core/src/ja > va/org/apache/lucene/search/BoostQuery.java#L97 > > > > > > > > > > > > -- > > Adrien > > > > - > > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > > For additional commands, e-mail: java-user-h...@lucene.apache.org > > > > - To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
Re: Use custom score in ConstantScoreQuery
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 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 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 > > wrote: > > > > > > Small reminder. Any input on this? > > > > > > Thanks, > > > Stamatis > > > > > > On Mon, Dec 2, 2019 at 12:10 PM Stamatis Zampetakis > > > > 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-unsubscr...@lucene.apache.org > > For additional commands, e-mail: java-user-h...@lucene.apache.org > > > > > -- Aditya Varun Chadha | http://www.adichad.com | +49 (0) 152 25914008 (M)
Re: Use custom score in ConstantScoreQuery
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 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 > wrote: > > > > Small reminder. Any input on this? > > > > Thanks, > > Stamatis > > > > On Mon, Dec 2, 2019 at 12:10 PM Stamatis Zampetakis > > 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-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > >
Re: Use custom score in ConstantScoreQuery
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 wrote: > > Small reminder. Any input on this? > > Thanks, > Stamatis > > On Mon, Dec 2, 2019 at 12:10 PM Stamatis Zampetakis > 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-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
Re: Use custom score in ConstantScoreQuery
Small reminder. Any input on this? Thanks, Stamatis On Mon, Dec 2, 2019 at 12:10 PM Stamatis Zampetakis 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 >
