Github user jkbradley commented on a diff in the pull request:
https://github.com/apache/spark/pull/12066#discussion_r61474455
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/classification/ProbabilisticClassifier.scala
---
@@ -138,22 +138,7 @@ abstract class ProbabilisticClassificationModel[
}
predictUDF(col($(featuresCol)))
}
- // The label column for base binary classifier of OneVsRest will not
be retained during
- // model transformation, so we should not handle label column
metadata as well.
- if (dataset.schema.fieldNames.contains($(labelCol))) {
- // determine number of classes either from metadata if provided.
- val labelSchema = dataset.schema($(labelCol))
- // extract label metadata from label column if present, or create
a nominal attribute
- // to output the number of labels
- val labelAttribute = Attribute.fromStructField(labelSchema) match {
- case _: NumericAttribute | UnresolvedAttribute =>
-
NominalAttribute.defaultAttr.withName("label").withNumValues(numClasses)
- case attr: Attribute => attr
- }
- outputData = outputData.withColumn(getPredictionCol, predUDF,
labelAttribute.toMetadata)
- } else {
- outputData = outputData.withColumn(getPredictionCol, predUDF)
- }
+ outputData = outputData.withColumn($(predictionCol), predUDF,
predictionMetadata)
--- End diff --
Same here; set name
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