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https://issues.apache.org/jira/browse/SOLR-385?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12921473#action_12921473
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Peter Karich commented on SOLR-385:
-----------------------------------
When I am thinking a bit more about this issue. For the 'ungeneralized version'
- sorting against the maximum of the score (or any field?)- we can use the
group-feature!
http://wiki.apache.org/solr/FieldCollapsing
The Solution - I think - would be the following request:
http://localhost:8983/solr/select/?q=hard&group=true&group.field=manu_exact&group.limit=1&debug=true&fl=*,score
the collapse groups are ordered by the maxScore I think + hope ;-)
So it is the same as we want:
http://localhost:8983/solr/select/?q=hard&facet=true&facet.field=manu_exact&debug=true&fl=*,score&facet.stats.sort=max(score)
desc
Now one remaing task could be to extend this feature with max, min and mean
functions ...
here is the 'group' result:
{code}
<lst>
<str name="groupValue">Maxtor Corp.</str>
−
<result name="doclist" numFound="1" start="0" maxScore="0.70904505">
−
<doc>
<float name="score">0.70904505</float>
−
<arr name="cat">
<str>electronics</str>
<str>hard drive</str>
</arr>
−
<arr name="features">
<str>SATA 3.0Gb/s, NCQ</str>
<str>8.5ms seek</str>
<str>16MB cache</str>
</arr>
<str name="id">6H500F0</str>
<bool name="inStock">true</bool>
<str name="manu">Maxtor Corp.</str>
<date name="manufacturedate_dt">2006-02-13T15:26:37Z</date>
−
<str name="name">
Maxtor DiamondMax 11 - hard drive - 500 GB - SATA-300
</str>
<int name="popularity">6</int>
<float name="price">350.0</float>
<str name="store">45.17614,-93.87341</str>
</doc>
</result>
</lst>
−
<lst>
<str name="groupValue">Samsung Electronics Co. Ltd.</str>
−
<result name="doclist" numFound="1" start="0" maxScore="0.5908709">
−
<doc>
<float name="score">0.5908709</float>
−
<arr name="cat">
<str>electronics</str>
<str>hard drive</str>
</arr>
−
<arr name="features">
<str>7200RPM, 8MB cache, IDE Ultra ATA-133</str>
−
<str>
NoiseGuard, SilentSeek technology, Fluid Dynamic Bearing (FDB) motor
</str>
</arr>
<str name="id">SP2514N</str>
<bool name="inStock">true</bool>
<str name="manu">Samsung Electronics Co. Ltd.</str>
<date name="manufacturedate_dt">2006-02-13T15:26:37Z</date>
−
<str name="name">
Samsung SpinPoint P120 SP2514N - hard drive - 250 GB - ATA-133
</str>
<int name="popularity">6</int>
<float name="price">92.0</float>
<str name="store">45.17614,-93.87341</str>
</doc>
</result>
</lst>
{code}
this would be the faceting result:
{code}
<lst name="facet_fields">
<lst name="manu_exact">
<int name="Maxtor Corp." score="0.70904505">1</int>
<int name="Samsung Electronics Co. Ltd." score="0.5908709">1</int>
...
{code}
> facet sorting with relevancy
> ----------------------------
>
> Key: SOLR-385
> URL: https://issues.apache.org/jira/browse/SOLR-385
> Project: Solr
> Issue Type: New Feature
> Components: search
> Reporter: Dmitry Degtyarev
> Priority: Minor
>
> Sometimes facet sort based only on the count of matches is not relevant, I
> need to sort not only by the count of matches, but also on the scores of
> matches.
> In the most simple way it must sort categories by the sum of item scores that
> matches query and the category. In the best way there should be some
> coefficient to multiply Scores or some function.
> Is it possible to implement such a behavior for facet sort?
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