Github user tillrohrmann commented on a diff in the pull request:
https://github.com/apache/flink/pull/1985#discussion_r63509887
--- Diff:
flink-libraries/flink-ml/src/main/scala/org/apache/flink/ml/optimization/PartialLossFunction.scala
---
@@ -47,21 +47,106 @@ object SquaredLoss extends PartialLossFunction {
/** Calculates the loss depending on the label and the prediction
*
- * @param prediction
- * @param label
- * @return
+ * @param prediction The predicted value
+ * @param label The true value
+ * @return The loss
*/
override def loss(prediction: Double, label: Double): Double = {
0.5 * (prediction - label) * (prediction - label)
}
/** Calculates the derivative of the [[PartialLossFunction]]
*
- * @param prediction
- * @param label
- * @return
+ * @param prediction The predicted value
+ * @param label The true value
+ * @return The derivative of the loss function
--- End diff --
Good code completion, thanks :-)
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