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https://issues.apache.org/jira/browse/SPARK-12780?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15094355#comment-15094355
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Apache Spark commented on SPARK-12780:
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User 'yinxusen' has created a pull request for this issue:
https://github.com/apache/spark/pull/10724
> 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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