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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2015/04/28 04:57:06 UTC
[jira] [Assigned] (SPARK-5895) Add VectorSlicer
[ https://issues.apache.org/jira/browse/SPARK-5895?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Apache Spark reassigned SPARK-5895:
-----------------------------------
Assignee: Apache Spark (was: Xusen Yin)
> Add VectorSlicer
> ----------------
>
> Key: SPARK-5895
> URL: https://issues.apache.org/jira/browse/SPARK-5895
> Project: Spark
> Issue Type: Sub-task
> Components: ML
> Reporter: Xiangrui Meng
> Assignee: Apache Spark
>
> `VectorSlicer` takes a vector column and output a vector column with a subset of features.
> {code}
> val vs = new VectorSlicer()
> .setInputCol("user")
> .setSelectedFeatures("age", "salary")
> .setOutputCol("usefulUserFeatures")
> {code}
> We should allow specifying selected features by indices and by names. It should preserve the output names.
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