Package edu.cmu.tetrad.search

Class ZhangShenBoundScore

java.lang.Object

edu.cmu.tetrad.search.ZhangShenBoundScore

All Implemented Interfaces:

Score

public class ZhangShenBoundScore
extends Object
implements Score

Implements the Zhang-Shen bound score.

Author:

Joseph Ramsey

Constructor Summary

Constructors

Constructor	Description
ZhangShenBoundScore(DataSet dataSet)	Constructs the score using a covariance matrix.
ZhangShenBoundScore(ICovarianceMatrix covariances)	Constructs the score using a covariance matrix.

Method Summary

Modifier and Type	Method	Description
boolean	determines(List<Node> z, Node y)
ICovarianceMatrix	getCovariances()	Specialized scoring method for a single parent.
int	getMaxDegree()
static double	getP(double pn, double m0, double lambda)
int	getSampleSize()
List<Node>	getVariables()
boolean	isChanged()
boolean	isEffectEdge(double bump)
boolean	isVerbose()
double	localScore(int i, int... parents)
double	localScoreDiff(int x, int y, int[] z)
void	setChanged(boolean b)
void	setRiskBound(double riskBound)
void	setVerbose(boolean verbose)
static double	zhangShenLambda(int m0, double pn, double riskBound)

Methods inherited from class java.lang.Object

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

Methods inherited from interface edu.cmu.tetrad.search.Score

append, defaultScore, getVariable, localScore, localScore, localScoreDiff, toString

Constructor Details

ZhangShenBoundScore

public ZhangShenBoundScore(ICovarianceMatrix covariances)

Constructs the score using a covariance matrix.

ZhangShenBoundScore

public ZhangShenBoundScore(DataSet dataSet)

Constructs the score using a covariance matrix.

Method Details

zhangShenLambda

public static double zhangShenLambda(int m0,
 double pn,
 double riskBound)

getP

public static double getP(double pn,
 double m0,
 double lambda)

localScoreDiff

public double localScoreDiff(int x,
 int y,
 int[] z)

Specified by:

localScoreDiff in interface Score

localScore

public double localScore(int i,
 int... parents)
                  throws RuntimeException

Specified by:

localScore in interface Score

Parameters:

i - The index of the node.

parents - The indices of the node's parents.

Returns:

The score, or NaN if the score cannot be calculated.

Throws:

RuntimeException

getCovariances

public ICovarianceMatrix getCovariances()

Specialized scoring method for a single parent. Used to speed up the effect edges search.

getSampleSize

public int getSampleSize()

Specified by:

getSampleSize in interface Score

isEffectEdge

public boolean isEffectEdge(double bump)

Specified by:

isEffectEdge in interface Score

isVerbose

public boolean isVerbose()

setVerbose

public void setVerbose(boolean verbose)

getVariables

public List<Node> getVariables()

Specified by:

getVariables in interface Score

getMaxDegree

public int getMaxDegree()

Specified by:

getMaxDegree in interface Score

determines

public boolean determines(List<Node> z,
 Node y)

Specified by:

determines in interface Score

isChanged

public boolean isChanged()

setChanged

public void setChanged(boolean b)

setRiskBound

public void setRiskBound(double riskBound)