Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/5967#discussion_r29953037
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/classification/LogisticRegression.scala
---
@@ -193,3 +308,246 @@ class LogisticRegressionModel private[ml] (
copyValues(new LogisticRegressionModel(parent, weights, intercept),
extra)
}
}
+
+/**
+ * MultiClassSummarizer computes the number of distinct labels and
corresponding counts,
+ * and validates the data to see if the labels used for k class
multi-label classification
+ * are in the range of {0, 1, ..., k - 1} in a online fashion.
+ *
+ * Two MultilabelSummarizer can be merged together to have a statistical
summary of the
+ * corresponding joint dataset.
+ */
+class MultiClassSummarizer private[ml] extends Serializable {
--- End diff --
private?
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