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From "Karol Grzegorczyk (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAHOUT-1555) Exception thrown when a test example has the label not present in training examples
Date Wed, 21 May 2014 08:28:37 GMT
Karol Grzegorczyk created MAHOUT-1555:
-----------------------------------------

             Summary: Exception thrown when a test example has the label not present in training
examples
                 Key: MAHOUT-1555
                 URL: https://issues.apache.org/jira/browse/MAHOUT-1555
             Project: Mahout
          Issue Type: Bug
          Components: Classification
    Affects Versions: 1.0
            Reporter: Karol Grzegorczyk
            Priority: Minor
             Fix For: 1.0
         Attachments: test_label_not_present_in_training_examples.diff

Currently an IllegalArgumentException is thrown when a test example has the label (belongs
to the class) not present in training examples. When the number of labels is big, such a situation
is likely and valid. The example of course will be misclassified, but exception should not
be thrown. 



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