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https://issues.apache.org/jira/browse/SPARK-16421?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen updated SPARK-16421:
------------------------------
Assignee: Bryan Cutler
Priority: Major (was: Trivial)
> 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
> Assignee: Bryan Cutler
> Fix For: 2.1.0
>
>
> 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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