Package edu.cmu.tetrad.search

Class IndTestIndependenceFacts

java.lang.Object

edu.cmu.tetrad.search.IndTestIndependenceFacts

All Implemented Interfaces:

IndependenceTest

public final class IndTestIndependenceFacts
extends Object
implements IndependenceTest

Checks conditional independence against a list of conditional independence facts, manually entered.

Author:

Joseph Ramsey

See Also:

• ChiSquareTest

Constructor Summary

Constructors

Constructor	Description
IndTestIndependenceFacts(IndependenceFacts facts)

Method Summary

Modifier and Type	Method	Description
IndependenceResult	checkIndependence(Node x, Node y, List<Node> z)
boolean	determines(List<Node> z, Node y)
double	getAlpha()
ICovarianceMatrix	getCov()
List<Matrix>	getCovMatrices()
DataModel	getData()
List<DataSet>	getDataSets()
double	getPValue()
int	getSampleSize()
double	getScore()	A score that is higher with more likely models.
Node	getVariable(String name)
List<String>	getVariableNames()
List<Node>	getVariables()
IndependenceTest	indTestSubset(List<Node> vars)
boolean	isVerbose()
void	setAlpha(double alpha)	Sets the significance level.
void	setVerbose(boolean verbose)

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.IndependenceTest

checkIndependence, toString

Constructor Details

IndTestIndependenceFacts

public IndTestIndependenceFacts(IndependenceFacts facts)

Method Details

indTestSubset

public IndependenceTest indTestSubset(List<Node> vars)

Specified by:

indTestSubset in interface IndependenceTest

Returns:

an Independence test for a subset of the variables.

checkIndependence

public IndependenceResult checkIndependence(Node x,
 Node y,
 List<Node> z)

Specified by:

checkIndependence in interface IndependenceTest

Returns:

true if the given independence question is judged true, false if not. The independence question is of the form x _||_ y | z, z = <z1,...,zn>, where x, y, z1,...,zn are variables in the list returned by getVariableNames().

getPValue

public double getPValue()

getVariables

public List<Node> getVariables()

Specified by:

getVariables in interface IndependenceTest

Returns:

the list of variables over which this independence checker is capable of determinining independence relations.

getVariable

public Node getVariable(String name)

Specified by:

getVariable in interface IndependenceTest

Returns:

the variable by the given name.

getVariableNames

public List<String> getVariableNames()

Specified by:

getVariableNames in interface IndependenceTest

Returns:

the list of names for the variables in getNodesInEvidence.

determines

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

Specified by:

determines in interface IndependenceTest

Returns:

true if y is determined the variable in z.

getAlpha

public double getAlpha()

Specified by:

getAlpha in interface IndependenceTest

Returns:

the significance level of the independence test.

setAlpha

public void setAlpha(double alpha)

Description copied from interface: IndependenceTest

Sets the significance level.

Specified by:

setAlpha in interface IndependenceTest

getData

public DataModel getData()

Specified by:

getData in interface IndependenceTest

Returns:

The data model for the independence test.

getCov

public ICovarianceMatrix getCov()

Specified by:

getCov in interface IndependenceTest

getDataSets

public List<DataSet> getDataSets()

Specified by:

getDataSets in interface IndependenceTest

getSampleSize

public int getSampleSize()

Specified by:

getSampleSize in interface IndependenceTest

getCovMatrices

public List<Matrix> getCovMatrices()

Specified by:

getCovMatrices in interface IndependenceTest

getScore

public double getScore()

Description copied from interface: IndependenceTest

A score that is higher with more likely models.

Specified by:

getScore in interface IndependenceTest

isVerbose

public boolean isVerbose()

Specified by:

isVerbose in interface IndependenceTest

setVerbose

public void setVerbose(boolean verbose)

Specified by:

setVerbose in interface IndependenceTest