[jira] [Updated] (SPARK-16421) Improve output from ML examples

["Bryan Cutler (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-16421?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bryan Cutler updated SPARK-16421:
---------------------------------
    Issue Type: Sub-task  (was: Improvement)
        Parent: SPARK-16260

> Improve output from ML examples
> -------------------------------
>
>                 Key: SPARK-16421
>                 URL: https://issues.apache.org/jira/browse/SPARK-16421
>             Project: Spark
>          Issue Type: Sub-task
>          Components: Examples, ML
>            Reporter: Bryan Cutler
>            Priority: Trivial
>
> In many ML examples, the output is useless.  Sometimes {{show()}} is called and any pertinent results are hidden.  For example, here is the output of max_abs_scaler
> {noformat}
> $ bin/spark-submit examples/src/main/python/ml/max_abs_scaler_example.py 
> +-----+--------------------+--------------------+
> |label|            features|      scaledFeatures|
> +-----+--------------------+--------------------+
> |  0.0|(692,[127,128,129...|(692,[127,128,129...|
> |  1.0|(692,[158,159,160...|(692,[158,159,160...|
> |  1.0|(692,[124,125,126...|(692,[124,125,126...|
> {noformat}
> Other times a few rows are printed out when {{show}} might be more appropriate.  Here is the output from binarizer_example
> {noformat}
> $ bin/spark-submit examples/src/main/python/ml/binarizer_example.py 
> 0.0                                                                             
> 1.0
> 0.0
> {noformat}
> But would be much more useful to just {{show()}} the transformed DataFrame
> {noformat}
> +-----+-------+-----------------+
> |label|feature|binarized_feature|
> +-----+-------+-----------------+
> |    0|    0.1|              0.0|
> |    1|    0.8|              1.0|
> |    2|    0.2|              0.0|
> +-----+-------+-----------------+
> {noformat}



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