Class RegTreeNodeStat

java.lang.Object

biz.k11i.xgboost.tree.RegTreeNodeStat

All Implemented Interfaces:

INodeStat, Serializable

public class RegTreeNodeStat
extends Object
implements INodeStat, Serializable

Statistics for node in tree.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
(package private) final float	base_weight
(package private) final int	leaf_child_cnt
(package private) final float	loss_chg
(package private) final float	sum_hess

Constructor Summary

Constructors

Constructor	Description
RegTreeNodeStat(ModelReader reader)

Method Summary

Modifier and Type	Method	Description
float	getBaseWeight()
float	getCover()
float	getGain()
int	getLeafCount()
float	getWeight()

Methods inherited from class Object

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

Field Details

loss_chg

final float loss_chg

sum_hess

final float sum_hess

base_weight

final float base_weight

leaf_child_cnt

final int leaf_child_cnt

Constructor Details

RegTreeNodeStat

RegTreeNodeStat(ModelReader reader)
         throws IOException

Throws:

IOException

Method Details

getWeight

public float getWeight()

Specified by:

getWeight in interface INodeStat

getGain

public float getGain()

Returns:

loss chg caused by current split

getCover

public float getCover()

Returns:

sum of hessian values, used to measure coverage of data

getBaseWeight

public float getBaseWeight()

Returns:

weight of current node

getLeafCount

public int getLeafCount()

Returns:

number of child that is leaf node known up to now