Github user jkbradley commented on a diff in the pull request:
https://github.com/apache/spark/pull/15435#discussion_r133829306
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/classification/LogisticRegression.scala
---
@@ -1484,3 +1556,96 @@ class BinaryLogisticRegressionSummary
private[classification] (
binaryMetrics.recallByThreshold().toDF("threshold", "recall")
}
}
+
+sealed trait BinaryLogisticRegressionTrainingSummary extends
BinaryLogisticRegressionSummary
+ with LogisticRegressionTrainingSummary
+
+/**
+ * :: Experimental ::
+ * Multiclass logistic regression training results.
+ *
+ * @param predictions dataframe output by the model's `transform` method.
+ * @param probabilityCol field in "predictions" which gives the
probability of
+ * each class as a vector.
+ * @param predictionCol field in "predictions" which gives the prediction
for a data instance as a
+ * double.
+ * @param labelCol field in "predictions" which gives the true label of
each instance.
+ * @param featuresCol field in "predictions" which gives the features of
each instance as a vector.
+ * @param objectiveHistory objective function (scaled loss +
regularization) at each iteration.
+ */
+private class LogisticRegressionTrainingSummaryImpl(
+ override val predictions: DataFrame,
--- End diff --
Same for BinaryLogisticRegressionTrainingSummaryImpl
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