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https://issues.apache.org/jira/browse/SOLR-7739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15098609#comment-15098609
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David de Kleer commented on SOLR-7739:
--------------------------------------

Hi Alessandro,

It turned out there was no problem at all, it was more that I didn't see that 
labels were being added (or not) in SOLR's output/the web interface. That's why 
I added a print statement and a slight modification to the 
ClassificationUpdateProcessor, something like

{code:java}
...
score = classificationResult.getScore();
System.out.println("(ClassificationUpdateProcessor) Found class " + 
assignedClass + " with score " + score + " for this document.");
doc.addField("label_" + assignedClass, score);
...
{code}

for example. The print statement and the searchable score (below 1) gave me an 
indication that labels were really being added. So again, it turned out it 
wasn't really a problem. And thanks again for updating the patch! (y)

With kind regards,

David

> Lucene Classification Integration - UpdateRequestProcessor
> ----------------------------------------------------------
>
>                 Key: SOLR-7739
>                 URL: https://issues.apache.org/jira/browse/SOLR-7739
>             Project: Solr
>          Issue Type: New Feature
>          Components: update
>    Affects Versions: 5.2.1
>            Reporter: Alessandro Benedetti
>            Assignee: Tommaso Teofili
>            Priority: Minor
>              Labels: classification, index-time, update.chain, 
> updateProperties
>         Attachments: SOLR-7739.patch, SOLR-7739.patch
>
>
> It would be nice to have an UpdateRequestProcessor to interact with the 
> Lucene Classification Module and provide an easy way of auto classifying Solr 
> Documents on indexing.
> Documentation will be provided with the patch
> A first design will be provided soon.



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