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  1. Mahout
  2. MAHOUT-1635

Getting an exception when I provide classification labels manually for Naive Bayes

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 0.9
    • Fix Version/s: 0.10.0
    • Component/s: Classification
    • Labels:

      Description

      If I let the Naive Bayes program itself extract the classification labels, the program runs fine. But, I get the following error when I provide the classification labels for the dataset manually.

      Error: java.lang.IllegalArgumentException: Wrong numLabels: 0. Must be > 0!
      at com.google.common.base.Preconditions.checkArgument(Preconditions.java:88)
      at org.apache.mahout.classifier.naivebayes.training.WeightsMapper.setup(WeightsMapper.java:45)
      at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:142)
      at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:784)
      at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
      at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:169)
      at java.security.AccessController.doPrivileged(Native Method)
      at javax.security.auth.Subject.doAs(Subject.java:415)
      at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1640)
      at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:164)

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          Suman Somasundar

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            People

            • Assignee:
              Andrew_Palumbo Andrew Palumbo
              Reporter:
              sumansomasundar Suman Somasundar
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              Dates

              • Created:
                Updated:
                Resolved: