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https://issues.apache.org/jira/browse/SOLR-69?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ryan McKinley updated SOLR-69:
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Attachment: SOLR-69.patch
trivial changes so it applies to trunk without conflicts...
PATCH:MoreLikeThis support
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Key: SOLR-69
URL: https://issues.apache.org/jira/browse/SOLR-69
Project: Solr
Issue Type: Improvement
Components: search
Reporter: Bertrand Delacretaz
Priority: Minor
Attachments: lucene-queries-2.0.0.jar, 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-user@lucene.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://localhost:8983/solr/select/?stylesheet=q=apacheqt=standardmlt=truemlt.fl=manu,catmlt.mindf=1mlt.mindf=1fl=id,score
http://localhost:8983/solr/select/?stylesheet=q=apacheqt=dismaxmlt=truemlt.fl=manu,catmlt.mindf=1mlt.mindf=1fl=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=score1.5293242/float
str name=idSOLR1000/str
/doc
/result
result name=SOLR1000 numFound=1 start=0 maxScore=1.5293242
doc
float name=score1.5293242/float
str name=idUTF8TEST/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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