Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/5626#discussion_r29024748
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/impl/tree/treeParams.scala ---
@@ -296,5 +299,194 @@ private[ml] trait TreeRegressorParams extends Params {
private[ml] object TreeRegressorParams {
// These options should be lowercase.
- val supportedImpurities: Array[String] =
Array("variance").map(_.toLowerCase)
+ final val supportedImpurities: Array[String] =
Array("variance").map(_.toLowerCase)
+}
+
+/**
+ * :: DeveloperApi ::
+ * Parameters for Decision Tree-based ensemble algorithms.
+ *
+ * Note: Marked as private and DeveloperApi since this may be made public
in the future.
+ */
+@DeveloperApi
+private[ml] trait TreeEnsembleParams extends DecisionTreeParams with
HasSeed {
+
+ /**
+ * Fraction of the training data used for learning each decision tree.
+ * (default = 1.0)
+ * @group param
+ */
+ final val subsamplingRate: DoubleParam = new DoubleParam(this,
"subsamplingRate",
+ "Fraction of the training data used for learning each decision tree.")
+
+ setDefault(subsamplingRate -> 1.0)
+
+ /** @group setParam */
+ def setSubsamplingRate(value: Double): this.type = {
+ require(value > 0.0 && value <= 1.0,
+ s"Subsampling rate must be in range (0,1]. Bad rate: $value")
+ set(subsamplingRate, value)
+ this
+ }
+
+ /** @group getParam */
+ final def getSubsamplingRate: Double = getOrDefault(subsamplingRate)
+
+ /** @group setParam */
+ def setSeed(value: Long): this.type = {
--- End diff --
`= set(seed.value)` should be sufficient.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
