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  1. Mahout
  2. MAHOUT-1263

Serialise/Deserialise Lambda value for OnlineLogisticRegression

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 0.7
    • Fix Version/s: 0.8
    • Component/s: Classification
    • Labels:

      Description

      The value for Lambda in OnlineLogisticRegression seems not the be serialised/deserialised correctly.

      If I train a model with a specific lambda value, serialise it, then read it back in, the value of Lambda goes back to the default value (1.0e-5).

      I've created a patch that adds the lambda value into the write/readFields (org.apache.hadoop.io.Writable). Patch includes a unit test that checks the values after serialising/deserialising to/from a ByteArray.

      I think this is correct, unless I'm missing something obvious?

      Note: this patch is not backwards compatible - can easily adapt to be more backwards compatible if required.

        Attachments

        1. MAHOUT-1263.patch
          5 kB
          Mike Davy

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            • Assignee:
              smarthi Suneel Marthi
              Reporter:
              davym Mike Davy
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