Package com.yahoo.searchlib.gbdt

Class FeatureNode

java.lang.Object

com.yahoo.searchlib.gbdt.TreeNode

com.yahoo.searchlib.gbdt.FeatureNode

Direct Known Subclasses:

CategoryFeatureNode, NumericFeatureNode

public abstract class FeatureNode
extends TreeNode

A node in a GBDT tree which references a feature value

Author:

bratseth

Constructor Summary

Constructors

Constructor	Description
FeatureNode(String feature, Optional<Integer> samples, TreeNode left, TreeNode right)

Method Summary

Modifier and Type	Method	Description
String	feature()
static FeatureNode	fromDom(Node node)
TreeNode	left()
protected abstract String	rankingExpressionCondition()
TreeNode	right()
String	toRankingExpression()

Methods inherited from class com.yahoo.searchlib.gbdt.TreeNode

samples

Methods inherited from class java.lang.Object

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

Constructor Details

FeatureNode

public FeatureNode(String feature,
 Optional<Integer> samples,
 TreeNode left,
 TreeNode right)

Method Details

feature

public String feature()

left

public TreeNode left()

right

public TreeNode right()

toRankingExpression

public String toRankingExpression()

Specified by:

toRankingExpression in class TreeNode

rankingExpressionCondition

protected abstract String rankingExpressionCondition()

fromDom

public static FeatureNode fromDom(Node node)