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Posted to issues@spark.apache.org by "Feynman Liang (JIRA)" <ji...@apache.org> on 2015/09/07 23:41:45 UTC

[jira] [Created] (SPARK-10478) Improve spark.ml.ann implementations for MLP

Feynman Liang created SPARK-10478:
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             Summary: Improve spark.ml.ann implementations for MLP
                 Key: SPARK-10478
                 URL: https://issues.apache.org/jira/browse/SPARK-10478
             Project: Spark
          Issue Type: Bug
          Components: ML
            Reporter: Feynman Liang
            Priority: Critical


SPARK-9471 adds an implementation of multi-layer perceptrons. However, there are a few issues with the current code that should be addressed, namely:

* Style guide: 4 indent method arguments, braces around one-line {{if}}s, punctuation in scaladocs
* Comments: cryptic variable names (e.g. {{gw}}, {{gb}}, {{gwb}}) should be documented
* Performance: parts of the code can be improved using Breeze broadcasts, vectorized operations, and Breeze UFuncs to avoid manual iteration and leverage BLAS optimization



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