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  1. Spark
  2. SPARK-7126

For spark.ml Classifiers, automatically index labels if they are not yet indexed

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Details

    • Improvement
    • Status: Resolved
    • Major
    • Resolution: Incomplete
    • 1.4.0
    • None
    • ML

    Description

      Now that we have StringIndexer, we could have spark.ml.classification.Classifier (the abstraction) automatically handle label indexing if the labels are not yet indexed.

      This would require a bit of design:

      • Should predict() output the original labels or the indices?
      • How should we notify users that the labels are being automatically indexed?
      • How should we provide that index to the users?
      • If multiple parts of a Pipeline automatically index labels, what do we need to do to make sure they are consistent?

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          is blocked by

          Sub-task - The sub-task of the issue SPARK-6113 Stabilize DecisionTree and ensembles APIs

          • Critical - Crashes, loss of data, severe memory leak.
          • Resolved

          Improvement - An improvement or enhancement to an existing feature or task. SPARK-6965 StringIndexer should convert input to Strings

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved
          relates to

          Sub-task - The sub-task of the issue SPARK-11106 Should ML Models contains single models or Pipelines?

          • Critical - Crashes, loss of data, severe memory leak.
          • Resolved

          Improvement - An improvement or enhancement to an existing feature or task. SPARK-14862 Tree and ensemble classification: do not require label metadata

          • Major - Major loss of function.
          • Resolved
          supercedes

          New Feature - A new feature of the product, which has yet to be developed. SPARK-2206 Automatically infer the number of classification classes in multiclass classification

          • Major - Major loss of function.
          • Resolved

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              Unassigned Unassigned
              josephkb Joseph K. Bradley
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                Updated:
                Resolved: