[SPARK-5895] Add VectorSlicer

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.5.0
• Component/s: ML
• Target Version/s: 1.5.0
• Assignee: Xusen Yin
• Reporter: Xiangrui Meng
• Shepherd: Joseph K. Bradley
• Created: 18/Feb/15 19:42
• Updated: 12/Aug/15 20:49
• Resolved: 06/Aug/15 00:08

Description

`VectorSlicer` takes a vector column and output a vector column with a subset of features.

val vs = new VectorSlicer()
  .setInputCol("user")
  .setSelectedFeatures("age", "salary")
  .setOutputCol("usefulUserFeatures")

We should allow specifying selected features by indices and by names. It should preserve the output names.

Issue Links

• relates to: SPARK-9893 User guide for VectorSlicer
• links to: [Github] Pull Request #5731 (yinxusen)
• links to: [Github] Pull Request #7972 (jkbradley)