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Posted to solr-user@lucene.apache.org by Demian Katz <de...@villanova.edu> on 2016/07/11 15:32:58 UTC
qf boosts with MoreLikeThis query parser
Hello,
I am currently using field-specific boosts in the qf setting of the MoreLikeThis request handler:
https://github.com/vufind-org/vufind/blob/master/solr/vufind/biblio/conf/solrconfig.xml#L410
I would like to accomplish the same effect using the MoreLikeThis query parser, so that I can take advantage of such benefits as sharding support.
I am currently using Solr 5.5.0, and in spite of trying many syntactical variations, I can't seem to get it to work. Some discussion on this JIRA ticket seems to suggest there may have been some problems caused by parsing limitations:
https://issues.apache.org/jira/browse/SOLR-7143
However, I think my work on this ticket should have eliminated those limitations:
https://issues.apache.org/jira/browse/SOLR-2798
Anyway, this brings up a few questions:
1.) Is field-specific boosting in qf supported by the MLT query parser, and if so, what syntax should I use?
2.) If this functionality is supported, but not in v5.5.0, approximately when was it fixed?
3.) If the functionality is still not working, would it be worth my time to try to fix it, or is it being excluded for a specific reason?
Any and all insight is appreciated. Apologies if the answers are already out there somewhere, but I wasn't able to find them!
thanks,
Demian
Re: qf boosts with MoreLikeThis query parser
Posted by Ere Maijala <er...@helsinki.fi>.
I've now attached a proposed patch to a pre-existing issue
https://issues.apache.org/jira/browse/SOLR-9267.
--Ere
13.10.2016, 2.19, Ere Maijala kirjoitti:
> Answering to myself.. I did some digging and found out that boosts work
> if qf is repeated in the local params, at least in Solr 6.2, like this:
>
> {!mlt qf=title^100 qf=author=^50}recordid
>
> However, it doesn't work properly with CloudMLTQParser used in SolrCloud
> mode. I'm working on a proposed fix for this and will post a Jira issue
> with a patch when done. There appears to be another problem with
> CloudMLTQParser too where it includes extraneous terms in the final
> query, and I'll take a stab at fixing that too.
>
> --Ere
>
> 1.8.2016, 9.12, Ere Maijala kirjoitti:
>> Hi All,
>>
>> I, too, would like to know the answer to these questions. I saw a
>> similar question by Nikaash Puri on 22 June with subject "help with
>> moreLikeThis" go unanswered. Any insight?
>>
>> Regards,
>> Ere
>>
>> 11.7.2016, 18.32, Demian Katz kirjoitti:
>>> Hello,
>>>
>>> I am currently using field-specific boosts in the qf setting of the
>>> MoreLikeThis request handler:
>>>
>>> https://github.com/vufind-org/vufind/blob/master/solr/vufind/biblio/conf/solrconfig.xml#L410
>>>
>>>
>>>
>>> I would like to accomplish the same effect using the MoreLikeThis
>>> query parser, so that I can take advantage of such benefits as
>>> sharding support.
>>>
>>> I am currently using Solr 5.5.0, and in spite of trying many
>>> syntactical variations, I can't seem to get it to work. Some
>>> discussion on this JIRA ticket seems to suggest there may have been
>>> some problems caused by parsing limitations:
>>>
>>> https://issues.apache.org/jira/browse/SOLR-7143
>>>
>>> However, I think my work on this ticket should have eliminated those
>>> limitations:
>>>
>>> https://issues.apache.org/jira/browse/SOLR-2798
>>>
>>> Anyway, this brings up a few questions:
>>>
>>>
>>> 1.) Is field-specific boosting in qf supported by the MLT query
>>> parser, and if so, what syntax should I use?
>>>
>>> 2.) If this functionality is supported, but not in v5.5.0,
>>> approximately when was it fixed?
>>>
>>> 3.) If the functionality is still not working, would it be worth my
>>> time to try to fix it, or is it being excluded for a specific reason?
>>>
>>> Any and all insight is appreciated. Apologies if the answers are
>>> already out there somewhere, but I wasn't able to find them!
>>>
>>> thanks,
>>> Demian
>>>
>
--
Ere Maijala
Kansalliskirjasto / The National Library of Finland
Re: qf boosts with MoreLikeThis query parser
Posted by Ere Maijala <er...@helsinki.fi>.
Answering to myself.. I did some digging and found out that boosts work
if qf is repeated in the local params, at least in Solr 6.2, like this:
{!mlt qf=title^100 qf=author=^50}recordid
However, it doesn't work properly with CloudMLTQParser used in SolrCloud
mode. I'm working on a proposed fix for this and will post a Jira issue
with a patch when done. There appears to be another problem with
CloudMLTQParser too where it includes extraneous terms in the final
query, and I'll take a stab at fixing that too.
--Ere
1.8.2016, 9.12, Ere Maijala kirjoitti:
> Hi All,
>
> I, too, would like to know the answer to these questions. I saw a
> similar question by Nikaash Puri on 22 June with subject "help with
> moreLikeThis" go unanswered. Any insight?
>
> Regards,
> Ere
>
> 11.7.2016, 18.32, Demian Katz kirjoitti:
>> Hello,
>>
>> I am currently using field-specific boosts in the qf setting of the
>> MoreLikeThis request handler:
>>
>> https://github.com/vufind-org/vufind/blob/master/solr/vufind/biblio/conf/solrconfig.xml#L410
>>
>>
>> I would like to accomplish the same effect using the MoreLikeThis
>> query parser, so that I can take advantage of such benefits as
>> sharding support.
>>
>> I am currently using Solr 5.5.0, and in spite of trying many
>> syntactical variations, I can't seem to get it to work. Some
>> discussion on this JIRA ticket seems to suggest there may have been
>> some problems caused by parsing limitations:
>>
>> https://issues.apache.org/jira/browse/SOLR-7143
>>
>> However, I think my work on this ticket should have eliminated those
>> limitations:
>>
>> https://issues.apache.org/jira/browse/SOLR-2798
>>
>> Anyway, this brings up a few questions:
>>
>>
>> 1.) Is field-specific boosting in qf supported by the MLT query
>> parser, and if so, what syntax should I use?
>>
>> 2.) If this functionality is supported, but not in v5.5.0,
>> approximately when was it fixed?
>>
>> 3.) If the functionality is still not working, would it be worth my
>> time to try to fix it, or is it being excluded for a specific reason?
>>
>> Any and all insight is appreciated. Apologies if the answers are
>> already out there somewhere, but I wasn't able to find them!
>>
>> thanks,
>> Demian
>>
--
Ere Maijala
Kansalliskirjasto / The National Library of Finland
Re: qf boosts with MoreLikeThis query parser
Posted by Ere Maijala <er...@helsinki.fi>.
Hi All,
I, too, would like to know the answer to these questions. I saw a
similar question by Nikaash Puri on 22 June with subject "help with
moreLikeThis" go unanswered. Any insight?
Regards,
Ere
11.7.2016, 18.32, Demian Katz kirjoitti:
> Hello,
>
> I am currently using field-specific boosts in the qf setting of the MoreLikeThis request handler:
>
> https://github.com/vufind-org/vufind/blob/master/solr/vufind/biblio/conf/solrconfig.xml#L410
>
> I would like to accomplish the same effect using the MoreLikeThis query parser, so that I can take advantage of such benefits as sharding support.
>
> I am currently using Solr 5.5.0, and in spite of trying many syntactical variations, I can't seem to get it to work. Some discussion on this JIRA ticket seems to suggest there may have been some problems caused by parsing limitations:
>
> https://issues.apache.org/jira/browse/SOLR-7143
>
> However, I think my work on this ticket should have eliminated those limitations:
>
> https://issues.apache.org/jira/browse/SOLR-2798
>
> Anyway, this brings up a few questions:
>
>
> 1.) Is field-specific boosting in qf supported by the MLT query parser, and if so, what syntax should I use?
>
> 2.) If this functionality is supported, but not in v5.5.0, approximately when was it fixed?
>
> 3.) If the functionality is still not working, would it be worth my time to try to fix it, or is it being excluded for a specific reason?
>
> Any and all insight is appreciated. Apologies if the answers are already out there somewhere, but I wasn't able to find them!
>
> thanks,
> Demian
>