Package edu.cmu.tetrad.search.test

Class IndTestIndependenceFacts

java.lang.Object

edu.cmu.tetrad.search.test.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.

Version:

$Id: $Id

Author:

josephramsey

Constructor Summary

Constructors

Constructor	Description
IndTestIndependenceFacts(IndependenceFacts facts)	Constructor.

Method Summary

Modifier and Type	Method	Description
IndependenceResult	checkIndependence(Node x, Node y, Set<Node> __z)	Checks independence by looking up facts in the list of facts supplied in the constructor.
boolean	determines(List<Node> z, Node y)	Determines if the given list of nodes (z) determines the specified node (y).
double	getAlpha()	Returns the alpha value used for checking independence.
DataModel	getData()	Returns the facts supplied in the constructor, which constutite a data model.
double	getPValue()	No p-values are available.
Node	getVariable(String name)	Retrieves a variable node based on its name.
List<Node>	getVariables()	Returns the list of variables for the facts.
IndependenceTest	indTestSubset(List<Node> vars)	Returns an IndependenceTest object for a sublist of variables.
boolean	isVerbose()	Returns whether verbose output is to be printed.
void	setAlpha(double alpha)	Sets the alpha value used for checking independence.
void	setVerbose(boolean verbose)	Sets whether verbose output is to be printed.

Methods inherited from class java.lang.Object

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

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

checkIndependence, determines, getCov, getDataSets, getSampleSize, getVariableNames, toString

Constructor Details

IndTestIndependenceFacts

public IndTestIndependenceFacts(IndependenceFacts facts)

Constructor.

Parameters:

facts - The facts to check.

See Also:

• IndependenceFacts

Method Details

indTestSubset

public IndependenceTest indTestSubset(List<Node> vars)

Returns an IndependenceTest object for a sublist of variables.

Specified by:

indTestSubset in interface IndependenceTest

Parameters:

vars - The sublist of variables.

Returns:

The IndependenceTest object for the given sublist of variables.

checkIndependence

public IndependenceResult checkIndependence(Node x,
 Node y,
 Set<Node> __z)

Checks independence by looking up facts in the list of facts supplied in the constructor.

Specified by:

checkIndependence in interface IndependenceTest

Parameters:

x - a Node object

y - a Node object

__z - a Set object

Returns:

a IndependenceResult object

See Also:

• IndependenceResult

getPValue

public double getPValue()

No p-values are available.

Returns:

Double.NaN.

getVariables

public List<Node> getVariables()

Returns the list of variables for the facts.

Specified by:

getVariables in interface IndependenceTest

Returns:

This list.

getVariable

public Node getVariable(String name)

Retrieves a variable node based on its name.

Specified by:

getVariable in interface IndependenceTest

Parameters:

name - The name of the variable.

Returns:

The variable node with the specified name, or null if not found.

Throws:

NullPointerException - If the name is null.

determines

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

Determines if the given list of nodes (z) determines the specified node (y).

Parameters:

z - The list of nodes to check for determination.

y - The node to check if it is determined.

Returns:

True if the list of nodes (z) determines the node (y), false otherwise.

getAlpha

public double getAlpha()

Returns the alpha value used for checking independence.

Specified by:

getAlpha in interface IndependenceTest

Returns:

The alpha value.

setAlpha

public void setAlpha(double alpha)

Sets the alpha value used for checking independence.

Specified by:

setAlpha in interface IndependenceTest

Parameters:

alpha - The alpha value.

getData

public DataModel getData()

Returns the facts supplied in the constructor, which constutite a data model.

Specified by:

getData in interface IndependenceTest

Returns:

These facts.

See Also:

• DataSet
• ICovarianceMatrix
• DataModel

isVerbose

public boolean isVerbose()

Returns whether verbose output is to be printed.

Specified by:

isVerbose in interface IndependenceTest

Returns:

True, if so.

setVerbose

public void setVerbose(boolean verbose)

Sets whether verbose output is to be printed.

Specified by:

setVerbose in interface IndependenceTest

Parameters:

verbose - True if verbose output should be printed, false otherwise.