[SPARK-24719] ClusteringEvaluator supports integer type labels

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 2.3.1
• Component/s: ML
• Target Version/s: 2.4.0
• Assignee: Unassigned
• Reporter: Xiangrui Meng
• Created: 02/Jul/18 17:20
• Updated: 02/Aug/18 06:56
• Resolved: 02/Aug/18 06:56

Description

ClusterEvaluator should support integer labels because we output integer labels in BisectingKMeans. https://github.com/apache/spark/blob/master/mllib/src/main/scala/org/apache/spark/ml/clustering/BisectingKMeans.scala#L77. We should cast numeric types to double in ClusteringEvaluator.

mgaido Do you have time to work on the fix?