Package biz.k11i.xgboost.tree

Class RegTreeImpl.Node

java.lang.Object

biz.k11i.xgboost.tree.RegTreeNode

biz.k11i.xgboost.tree.RegTreeImpl.Node

All Implemented Interfaces:

INode<FVec>, java.io.Serializable

Enclosing class:

RegTreeImpl

public static class RegTreeImpl.Node
extends RegTreeNode
implements java.io.Serializable

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private int	_defaultNext
(package private) boolean	_isLeaf
private int	_splitIndex
(package private) int	cleft_
(package private) int	cright_
(package private) float	leaf_value
(package private) int	parent_
(package private) int	sindex_
(package private) float	split_cond

Constructor Summary

Constructors

Constructor	Description
Node(ModelReader reader)

Method Summary

Modifier and Type	Method	Description
int	cdefault()
boolean	default_left()
float	getLeafValue()
int	getLeftChildIndex()
int	getParentIndex()
int	getRightChildIndex()
float	getSplitCondition()
int	getSplitIndex()
boolean	isLeaf()
int	next(FVec feat)

Methods inherited from class java.lang.Object

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

Field Detail

parent_

final int parent_

cleft_

final int cleft_

cright_

final int cright_

sindex_

final int sindex_

leaf_value

final float leaf_value

split_cond

final float split_cond

_defaultNext

private final int _defaultNext

_splitIndex

private final int _splitIndex

_isLeaf

final boolean _isLeaf

Constructor Detail

Node

Node(ModelReader reader)
throws java.io.IOException

Throws:

java.io.IOException

Method Detail

isLeaf

public boolean isLeaf()

Specified by:

isLeaf in interface INode<FVec>

getSplitIndex

public int getSplitIndex()

Specified by:

getSplitIndex in interface INode<FVec>

Specified by:

getSplitIndex in class RegTreeNode

Returns:

Index of domain category used to split on the node

cdefault

public int cdefault()

default_left

public boolean default_left()

Specified by:

default_left in class RegTreeNode

Returns:

True if default direction for unrecognized values is the LEFT child, otherwise false.

next

public int next(FVec feat)

Specified by:

next in interface INode<FVec>

getParentIndex

public int getParentIndex()

Specified by:

getParentIndex in class RegTreeNode

Returns:

Index of node's parent

getLeftChildIndex

public int getLeftChildIndex()

Specified by:

getLeftChildIndex in interface INode<FVec>

Specified by:

getLeftChildIndex in class RegTreeNode

Returns:

Index of node's left child node

getRightChildIndex

public int getRightChildIndex()

Specified by:

getRightChildIndex in interface INode<FVec>

Specified by:

getRightChildIndex in class RegTreeNode

Returns:

Index of node's right child node

getSplitCondition

public float getSplitCondition()

Specified by:

getSplitCondition in class RegTreeNode

Returns:

Split condition on the node, if the node is a split node. Leaf nodes have this value set to NaN

getLeafValue

public float getLeafValue()

Specified by:

getLeafValue in interface INode<FVec>

Specified by:

getLeafValue in class RegTreeNode

Returns:

Predicted value on the leaf node, if the node is leaf. Otherwise NaN