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  1. Hivemall
  2. HIVEMALL-245

Refactor RandomForest for Sparse Data handling

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 0.5.2
    • Fix Version/s: 0.6.0
    • Labels:
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      Description

      • Fix attribute to use RoaringBitmap instead of AttributeType[]
      • Support pruning of redundant decision tree nodes
      • Support the default value for missing values
      • Fix split handling of sparse numeric values
        • problem: split does not occur when column values have a single value
          • if(x<=1.0) { .. } else { ... } never split where sparse x is already 1.0
        • if there are only a single value for a column, then treat it as nominal value

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              • Assignee:
                myui Makoto Yui
                Reporter:
                myui Makoto Yui
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                  Updated:
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