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:

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 java.lang.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