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Posted to issues@spark.apache.org by "Joseph K. Bradley (JIRA)" <ji...@apache.org> on 2017/08/23 04:17:00 UTC
[jira] [Resolved] (SPARK-12664) Expose probability, rawPrediction
in MultilayerPerceptronClassificationModel
[ https://issues.apache.org/jira/browse/SPARK-12664?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Joseph K. Bradley resolved SPARK-12664.
---------------------------------------
Resolution: Fixed
Fix Version/s: 2.3.0
Issue resolved by pull request 17373
[https://github.com/apache/spark/pull/17373]
> Expose probability, rawPrediction in MultilayerPerceptronClassificationModel
> ----------------------------------------------------------------------------
>
> Key: SPARK-12664
> URL: https://issues.apache.org/jira/browse/SPARK-12664
> Project: Spark
> Issue Type: Improvement
> Components: ML
> Reporter: Robert Dodier
> Assignee: Weichen Xu
> Fix For: 2.3.0
>
>
> In org.apache.spark.ml.classification.MultilayerPerceptronClassificationModel, there isn't any way to get raw prediction scores; only an integer output (from 0 to #classes - 1) is available via the `predict` method.
> `mplModel.predict` is called within the class to get the raw score, but `mlpModel` is private so that isn't available to outside callers.
> The raw score is useful when the user wants to interpret the classifier output as a probability.
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