[jira] [Assigned] (SPARK-12780) Inconsistency returning value of ML python models' properties

["Apache Spark (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-12780?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-12780:
------------------------------------

    Assignee:     (was: Apache Spark)

> Inconsistency returning value of ML python models' properties
> -------------------------------------------------------------
>
>                 Key: SPARK-12780
>                 URL: https://issues.apache.org/jira/browse/SPARK-12780
>             Project: Spark
>          Issue Type: Bug
>          Components: ML, PySpark
>            Reporter: Xusen Yin
>            Priority: Minor
>
> In spark/python/pyspark/ml/feature.py, StringIndexerModel has a property method named labels, which is different with other properties in other models.
> In StringIndexerModel:
> {code:title=StringIndexerModel|theme=FadeToGrey|linenumbers=true|language=python|firstline=0001|collapse=false}
> @property
>     @since("1.5.0")
>     def labels(self):
>         """
>         Ordered list of labels, corresponding to indices to be assigned.
>         """
>         return self._java_obj.labels
> {code}
> In CounterVectorizerModel (as an example):
> {code:title=CounterVectorizerModel|theme=FadeToGrey|linenumbers=true|language=python|firstline=0001|collapse=false}
> @property
>     @since("1.6.0")
>     def vocabulary(self):
>         """
>         An array of terms in the vocabulary.
>         """
>         return self._call_java("vocabulary")
> {code}
> In StringIndexerModel, the returned value of labels is not an array of labels as expected. Otherwise it is a JavaMember of py4j.



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