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List:       solr-dev
Subject:    [jira] (LUCENE-7672) CachingNaiveBayesClassifier doesn't compute log prior.
From:       "ASF GitHub Bot (JIRA)" <jira () apache ! org>
Date:       2017-01-31 18:08:51
Message-ID: JIRA.13039248.1485885558000.850.1485886131558 () Atlassian ! JIRA
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    [ https://issues.apache.org/jira/browse/LUCENE-7672?page=com.atlassian.jira.plugin \
.system.issuetabpanels:comment-tabpanel&focusedCommentId=15847238#comment-15847238 ] 

ASF GitHub Bot commented on LUCENE-7672:
----------------------------------------

GitHub user QuasiChameleon opened a pull request:

    https://github.com/apache/lucene-solr/pull/152

    Added log prior calculations in CachingNaiveBayesClassifier.

    Jira issue : [LUCENE-7672](https://issues.apache.org/jira/browse/LUCENE-7672)

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/QuasiChameleon/lucene-solr master

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/lucene-solr/pull/152.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #152
    
----
commit 4d2d6c91fcd1eb8214ac3c9e5ec8a2c07d0d0374
Author: Kevin Crosby <kevin@resolvity.com>
Date:   2017-01-31T18:05:20Z

    Added log prior calculations in CachingNaiveBayesClassifier.

----


> CachingNaiveBayesClassifier doesn't compute log prior.
> ------------------------------------------------------
> 
> Key: LUCENE-7672
> URL: https://issues.apache.org/jira/browse/LUCENE-7672
> Project: Lucene - Core
> Issue Type: Bug
> Components: modules/classification
> Affects Versions: master (7.0), 6.3, 6.4, 6.5, 6.4.1, 6.5.0
> Reporter: Kevin Crosby
> Labels: newbie, patch
> Fix For: master (7.0)
> 
> Attachments: LUCENE-7672.patch
> 
> 
> The CachingNaiveBayesClassifier gives different results than the \
> SimpleNaiveBayesClassifier.  This is due to the fact that the \
> CachineNaiveBayesClassifier does not calculate the log prior on the class \
> (category) names, as it should. This bug has been fixed, and a patch has been \
> attached to this issue. This affects master, as well as previous releases up to \
> version 6.4.



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