srowen commented on a change in pull request #26135: [SPARK-29489][ML][PySpark]
ml.evaluation support log-loss
URL: https://github.com/apache/spark/pull/26135#discussion_r336044126
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File path:
mllib/src/main/scala/org/apache/spark/mllib/evaluation/MulticlassMetrics.scala
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@@ -23,33 +23,35 @@ import scala.collection.mutable
import org.apache.spark.annotation.Since
import org.apache.spark.mllib.linalg.{Matrices, Matrix}
import org.apache.spark.rdd.RDD
-import org.apache.spark.sql.{DataFrame, Row}
+import org.apache.spark.sql.DataFrame
/**
* Evaluator for multiclass classification.
*
- * @param predictionAndLabels an RDD of (prediction, label, weight) or
- * (prediction, label) tuples.
+ * @param predictionAndLabels an RDD of (prediction, label, weight,
probability) or
+ * (prediction, label, weight) or (prediction,
label) tuples.
*/
@Since("1.1.0")
class MulticlassMetrics @Since("1.1.0") (predictionAndLabels: RDD[_ <:
Product]) {
/**
* An auxiliary constructor taking a DataFrame.
- * @param predictionAndLabels a DataFrame with two double columns:
prediction and label
+ * @param predictionAndLabels a DataFrame with columns: prediction, label,
weight(optional)
Review comment:
Nit: spaces before paren
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