Roopa, did you try collapsing instead of grouping? it would work with ltr.. 

From: solr-user@lucene.apache.org At: 01/11/18 16:48:26To:  
solr-user@lucene.apache.org
Subject: Re: Learning to Rank (LTR) with grouping

Solution that I implemented currently is:
Since we have a web application which takes the solr results and display in
the UI and I need LTR enabled for only one of the group,
I am executing two parallel queries to Solr from web app.
1st query Get grouped results without LTR
2nd query Get results with no grouping + LTR
Merge 1) & 2) in web app.
Doing a performance test now. Since there are only 10 results for these
queries and the queries are executed in parallel, I don't foresee any
problems.

Thanks!
Roopa


On Thu, Jan 4, 2018 at 10:24 AM, Roopa Rao <roop...@gmail.com> wrote:

> Hi,
>
> Any guidance on this would be helpful.
>
> Thank you,
> Roopa
>
> On Tue, Dec 19, 2017 at 8:47 PM, Roopa Rao <roop...@gmail.com> wrote:
>
>> Hi Diego,
>>
>> Thank you for looking into it further.
>> We recently ported over to 6.6 version solely to use LTR feature as it is
>> critical for us.
>>
>> Since its not working with grouping in the base version, I am trying to
>> evaluate if there is any alternative way to make it work in 6.6 versus
>> upgrading to 7.0.
>>
>> Any guidance you could provide on what can be done to use 6.6 with
>> grouping + LTR or any alternatives would be helpful. Do I read your
>> response as needing to go to 7.0 when you say upstream?
>>
>> Thank you,
>> Roopa
>>
>>
>> On Tue, Dec 19, 2017 at 1:37 PM, Diego Ceccarelli <
>> diego.ceccare...@gmail.com> wrote:
>>
>>> Hi Roopa, unfortunately I can't port the patch to the branch_6_6, but
>>> soon I'll update to upstream. Sorry about that.
>>>
>>> On Mon, Dec 18, 2017 at 7:52 PM, Roopa Rao <roop...@gmail.com> wrote:
>>> > Hi -
>>> >
>>> > I merged the code from the bloomberg master-solr-8776 branch to
>>> branch_6_6
>>> > on Solr.
>>> >
>>> > When I tried to compile the solr source code, I am getting multiple
>>> > compilation errors (Attached), which seems to be due to the fact that
>>> the
>>> > branch master-solr-8776 may not be compatible with branch_6_6.
>>> >
>>> > Could you please provide your input if master-solr-8776 is compatible
>>> with
>>> > branch_6_6?
>>> >
>>> > If this is not the case then how to proceed with using fix in
>>> > master-solr-8776 with branch_6_6 can a new patch be created for this?
>>> >
>>> > Thank you,
>>> > Roopa
>>> >
>>> > On Mon, Dec 11, 2017 at 9:54 AM, Roopa Rao <roop...@gmail.com> wrote:
>>> >>
>>> >> Hi Diego,
>>> >>
>>> >> Thank you,
>>> >>
>>> >> I am interested in reranking the documents inside one of the groups.
>>> >>
>>> >> I will try the options you mentioned here.
>>> >>
>>> >> Thank you,
>>> >> Roopa
>>> >>
>>> >> On Mon, Dec 11, 2017 at 6:57 AM, Diego Ceccarelli (BLOOMBERG/ LONDON)
>>> >> <dceccarel...@bloomberg.net> wrote:
>>> >>>
>>> >>> Hi Roopa,
>>> >>>
>>> >>> If you look at the diff:
>>> >>>
>>> >>> https://github.com/apache/lucene-solr/pull/162/files
>>> >>>
>>> >>> I didn't change much in SolrIndexSearcher, you can try to skip the
>>> file
>>> >>> when applying the patch and redo the changes after.
>>> >>>
>>> >>> Alternatively, the feature branch is available here:
>>> >>>
>>> >>> https://github.com/bloomberg/lucene-solr/commits/master-solr-8776
>>> >>>
>>> >>> you could try to merge with that or cheery-pick my changes.
>>> >>>
>>> >>> Are you interested in reranking the groups or also in reranking the
>>> >>> documents inside each group?
>>> >>>
>>> >>> Cheers,
>>> >>> Diego
>>> >>>
>>> >>>
>>> >>> From: solr-user@lucene.apache.org At: 12/09/17 19:07:25To:
>>> >>> solr-user@lucene.apache.org
>>> >>> Subject: Re: Learning to Rank (LTR) with grouping
>>> >>>
>>> >>> Hi I tried to apply this JIRA SOLR-8776 as a patch as this feature is
>>> >>> critical.
>>> >>>
>>> >>> Here are the steps I took on my mac:
>>> >>>
>>> >>> On branch branch_6_5
>>> >>>
>>> >>> Your branch is up-to-date with 'origin/branch_6_5'
>>> >>>
>>> >>> patch -p1 -i 162.patch --dry-run
>>> >>>
>>> >>>
>>> >>> I am getting Failures for certain Hunks
>>> >>>
>>> >>> Example:
>>> >>>
>>> >>> patching file
>>> >>> solr/core/src/java/org/apache/solr/search/SolrIndexSearcher.java
>>> >>>
>>> >>> Hunk #1 FAILED at 1471.
>>> >>>
>>> >>>
>>> >>> Could you please give your input on how to apply this ticket as a
>>> patch
>>> >>> for
>>> >>> branch_6_5 ?
>>> >>>
>>> >>>
>>> >>> Thank you,
>>> >>>
>>> >>> Roopa
>>> >>>
>>> >>> On Fri, Dec 8, 2017 at 6:52 PM, Roopa Rao <roop...@gmail.com> wrote:
>>> >>>
>>> >>> > Hi Diego,
>>> >>> >
>>> >>> > Thank you, I will look into this and see how I could patch this.
>>> >>> >
>>> >>> > Thank you for your quick response,
>>> >>> > Roopa
>>> >>> >
>>> >>> >
>>> >>> > On Fri, Dec 8, 2017 at 5:44 PM, Diego Ceccarelli <
>>> >>> > diego.ceccare...@gmail.com> wrote:
>>> >>> >
>>> >>> >> Hi Roopa,
>>> >>> >>
>>> >>> >> LTR is implemented using RankQuery, and at the moment grouping
>>> doens't
>>> >>> >> support RankQuery.
>>> >>> >> I opened a jira item time ago
>>> >>> >> (https://issues.apache.org/jira/browse/SOLR-8776) and I would be
>>> happy
>>> >>> >> to receive feedback on that.  You can find the code here
>>> >>> >> https://github.com/apache/lucene-solr/pull/162.
>>> >>> >>
>>> >>> >> Cheers,
>>> >>> >> diego
>>> >>> >>
>>> >>> >> On Fri, Dec 8, 2017 at 9:15 PM, Roopa Rao <roop...@gmail.com>
>>> wrote:
>>> >>> >> > Hi,
>>> >>> >> >
>>> >>> >> > I am using grouping and LTR together and the results are not
>>> getting
>>> >>> >> > re-rank as it does without grouping.
>>> >>> >> >
>>> >>> >> > I am passing &rq parameter.
>>> >>> >> >
>>> >>> >> > Does LTR work with grouping on?
>>> >>> >> > Solr version 6.5
>>> >>> >> >
>>> >>> >> > Thank you,
>>> >>> >> > Roopa
>>> >>> >>
>>> >>> >
>>> >>> >
>>> >>>
>>> >>>
>>> >>
>>> >
>>>
>>
>>
>


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