Alexander Ulanov created SPARK-9118:
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             Summary: Implement integer array parameters for ml.param as 
IntArrayParam
                 Key: SPARK-9118
                 URL: https://issues.apache.org/jira/browse/SPARK-9118
             Project: Spark
          Issue Type: Improvement
          Components: ML
    Affects Versions: 1.4.0
            Reporter: Alexander Ulanov
            Priority: Minor
             Fix For: 1.4.0


ml/param/params.scala lacks integer array parameter. It is needed for some 
models such as multilayer perceptron to specify the layer sizes. I suggest to 
implement it as IntArrayParam similarly to DoubleArrayParam.



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