[jira] [Created] (FLINK-5426) Clean up the Flink Machine Learning library

["Fokko Driesprong (JIRA)" <ji...@apache.org>]

Fokko Driesprong created FLINK-5426:
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             Summary: Clean up the Flink Machine Learning library
                 Key: FLINK-5426
                 URL: https://issues.apache.org/jira/browse/FLINK-5426
             Project: Flink
          Issue Type: Improvement
          Components: Machine Learning Library
            Reporter: Fokko Driesprong


Hi Guys,

I would like to clean up the Machine Learning library. A lot of the code in the ML Library does not conform to the original contribution guide. For example:

Duplicate tests, different names, but exactly the same testcase:
https://github.com/apache/flink/blob/master/flink-libraries/flink-ml/src/test/scala/org/apache/flink/ml/math/DenseVectorSuite.scala#L148
https://github.com/apache/flink/blob/master/flink-libraries/flink-ml/src/test/scala/org/apache/flink/ml/math/DenseVectorSuite.scala#L164

Lot of multi-line tests-cases:
https://github.com/Fokko/flink/blob/master/flink-libraries/flink-ml/src/test/scala/org/apache/flink/ml/math/DenseVectorSuite.scala

Mis-use of constants:
https://github.com/apache/flink/blob/master/flink-libraries/flink-ml/src/main/scala/org/apache/flink/ml/math/DenseMatrix.scala#L58

Please allow me to clean this up, and I'm looking forward to contribute more code, especially to the ML part. I've have been a contributor to Apache Spark and am happy to extend the codebase with new distributed algorithms and make the codebase more mature.

Cheers, Fokko



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