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  1. Spark
  2. SPARK-20423

fix MLOR coeffs centering when reg == 0

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: 2.0.0, 2.1.0
    • Fix Version/s: 2.2.0
    • Component/s: ML
    • Labels:
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      Description

      When reg == 0, MLOR has multiple solutions and we need to centralize the coeffs to get identical result.
      BUT current implementation centralize the coefficientMatrix by the global coeffs means.

      In fact the coefficientMatrix should be centralized on each feature index itself.

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            • Assignee:
              Unassigned
              Reporter:
              WeichenXu123 Weichen Xu
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