Package org.apache.spark.ml.tree

Class EnsembleModelReadWrite

Object

org.apache.spark.ml.tree.EnsembleModelReadWrite

public class EnsembleModelReadWrite
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	EnsembleModelReadWrite.EnsembleNodeData	Info for one Node in a tree ensemble
static class	EnsembleModelReadWrite.EnsembleNodeData$

Constructor Summary

Constructors

Constructor	Description
EnsembleModelReadWrite()

Method Summary

Modifier and Type	Method	Description
static scala.Tuple3<org.apache.spark.ml.util.DefaultParamsReader.Metadata,scala.Tuple2<org.apache.spark.ml.util.DefaultParamsReader.Metadata,Node>[],double[]>	loadImpl(String path, SparkSession sparkSession, String className, String treeClassName)	Helper method for loading a tree ensemble from disk.
static <M extends Params> void	saveImpl(M instance, String path, SparkSession sparkSession, org.json4s.JObject extraMetadata)	Helper method for saving a tree ensemble to disk.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

EnsembleModelReadWrite

public EnsembleModelReadWrite()

Method Details

saveImpl

public static <M extends Params> void saveImpl(M instance,
 String path,
 SparkSession sparkSession,
 org.json4s.JObject extraMetadata)

Helper method for saving a tree ensemble to disk.

Parameters:

instance - Tree ensemble model

path - Path to which to save the ensemble model.

extraMetadata - Metadata such as numFeatures, numClasses, numTrees.

sparkSession - (undocumented)

loadImpl

public static scala.Tuple3<org.apache.spark.ml.util.DefaultParamsReader.Metadata,scala.Tuple2<org.apache.spark.ml.util.DefaultParamsReader.Metadata,Node>[],double[]> loadImpl(String path,
 SparkSession sparkSession,
 String className,
 String treeClassName)

Helper method for loading a tree ensemble from disk. This reconstructs all trees, returning the root nodes.

Parameters:

path - Path given to saveImpl

className - Class name for ensemble model type

treeClassName - Class name for tree model type in the ensemble

sparkSession - (undocumented)

Returns:

(ensemble metadata, array over trees of (tree metadata, root node)), where the root node is linked with all descendents

See Also:

• saveImpl for how the model was saved