Updated: (SOLR-69) PATCH:MoreLikeThis support

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Ryan McKinley updated SOLR-69:
------------------------------

    Attachment: SOLR-69-MoreLikeThisRequestHandler.patch

added param: mlt.boost that calls mlt.setBoost() to boost
the interesting terms (or not) this field is required if you
want a real number returned with
mlt.interestingTerms=details

> PATCH:MoreLikeThis support
> --------------------------
>
>                 Key: SOLR-69
>                 URL: https:/
/issues.apache.org/jira/browse/SOLR-69
>             Project: Solr
>          Issue Type: Improvement
>          Components: search
>            Reporter: Bertrand Delacretaz
>            Assignee: Ryan McKinley
>            Priority: Minor
>         Attachments: lucene-queries-2.0.0.jar,
lucene-queries-2.1.1-dev.jar,
SOLR-69-MoreLikeThisRequestHandler.patch,
SOLR-69-MoreLikeThisRequestHandler.patch,
SOLR-69-MoreLikeThisRequestHandler.patch,
SOLR-69-MoreLikeThisRequestHandler.patch,
SOLR-69-MoreLikeThisRequestHandler.patch, SOLR-69.patch,
SOLR-69.patch, SOLR-69.patch, SOLR-69.patch
>
>
> Here's a patch that implements simple support of
Lucene's MoreLikeThis class.
> The MoreLikeThisHelper code is heavily based on
(hmm..."lifted from" might be more appropriate

Erik Hatcher's example mentioned in http://www.mail
-archive.com/solr-userlucene.apache.org/msg00878.html
> To use it, add at least the following parameters to a
standard or dismax query:
>   mlt=true
>   mlt.fl=list,of,fields,which,define,similarity
> See the MoreLikeThisHelper source code for more
parameters.
> Here are two URLs that work with the example config,
after loading all documents found in exampledocs in the
index (just to show that it seems to work - of course you
need a larger corpus to make it interesting):
> http://l
ocalhost:8983/solr/select/?stylesheet=&q=apache&qt=s
tandard&mlt=true&mlt.fl=manu,cat&mlt.mindf=1
&mlt.mindf=1&fl=id,score
> http://loc
alhost:8983/solr/select/?stylesheet=&q=apache&qt=dis
max&mlt=true&mlt.fl=manu,cat&mlt.mindf=1&
;mlt.mindf=1&fl=id,score
> Results are added to the output like this:
> <response>
>   ...
>   <lst name="moreLikeThis">
>     <result name="UTF8TEST"
numFound="1" start="0"
maxScore="1.5293242">
>       <doc>
>         <float
name="score">1.5293242</float>
>         <str
name="id">SOLR1000</str>
>       </doc>
>     </result>
>     <result name="SOLR1000"
numFound="1" start="0"
maxScore="1.5293242">
>       <doc>
>         <float
name="score">1.5293242</float>
>         <str
name="id">UTF8TEST</str>
>       </doc>
>     </result>
>   </lst>
> I haven't tested this extensively yet, will do in the
next few days. But comments are welcome of course.

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