Package edu.cmu.tetrad.search.work_in_progress

Class IndTestMnlrLr

java.lang.Object

edu.cmu.tetrad.search.work_in_progress.IndTestMnlrLr

All Implemented Interfaces:

IndependenceTest

public class IndTestMnlrLr
extends Object
implements IndependenceTest

Performs a test of conditional independence X _||_ Y | Z1...Zn where all searchVariables are either continuous or discrete. This test is valid for both ordinal and non-ordinal discrete searchVariables.

Version:

$Id: $Id

Author:

bryanandrews

Constructor Summary

Constructors

Constructor	Description
IndTestMnlrLr(DataSet data, double alpha)	Constructs a new independence test for the given data set and significance level.

Method Summary

Modifier and Type	Method	Description
IndependenceResult	checkIndependence(Node x, Node y, Set<Node> _z)	Checks the independence between two nodes given a set of conditioning nodes.
boolean	determines(List<Node> z, Node y)	Determines the independence relation between a list of conditioning nodes and a target node.
double	getAlpha()	Returns the significance level of the independence test.
DataSet	getData()	Returns the dataset.
List<Node>	getVariables()	getVariables.
IndependenceTest	indTestSubset(List<Node> vars)	This method returns an independence test for a sublist of variables.
boolean	isVerbose()	Determines if the test prints verbose output.
void	setAlpha(double alpha)	Sets the significance level for the independence test.
void	setVerbose(boolean verbose)	Sets whether this test will print verbose output.
String	toString()	Returns a string representation of this object.

Methods inherited from class java.lang.Object

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

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

checkIndependence, determines, getCov, getDataSets, getSampleSize, getVariable, getVariableNames

Constructor Details

IndTestMnlrLr

public IndTestMnlrLr(DataSet data,
 double alpha)

Constructs a new independence test for the given data set and significance level.

Parameters:

data - the data set.

alpha - the significance level.

Method Details

indTestSubset

public IndependenceTest indTestSubset(List<Node> vars)

This method returns an independence test for a sublist of variables.

Specified by:

indTestSubset in interface IndependenceTest

Parameters:

vars - The sublist of variables.

Returns:

An object of type IndependenceTest.

Throws:

UnsupportedOperationException - If this feature is not implemented.

checkIndependence

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

Checks the independence between two nodes given a set of conditioning nodes.

Specified by:

checkIndependence in interface IndependenceTest

Parameters:

x - the first node

y - the second node

_z - the set of conditioning nodes

Returns:

the result of the independence test

See Also:

• IndependenceResult

getVariables

public List<Node> getVariables()

getVariables.

Specified by:

getVariables in interface IndependenceTest

Returns:

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

determines

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

Determines the independence relation between a list of conditioning nodes and a target node.

Parameters:

z - The list of conditioning nodes.

y - The target node.

Returns:

true if the target node is independent of the conditioning nodes; false otherwise.

getAlpha

public double getAlpha()

Returns the significance level of the independence test.

Specified by:

getAlpha in interface IndependenceTest

Returns:

The significance level.

setAlpha

public void setAlpha(double alpha)

Sets the significance level for the independence test.

Specified by:

setAlpha in interface IndependenceTest

Parameters:

alpha - The significance level to set.

getData

public DataSet getData()

Returns the dataset.

Specified by:

getData in interface IndependenceTest

Returns:

The dataset.

See Also:

• DataSet
• ICovarianceMatrix
• DataModel

isVerbose

public boolean isVerbose()

Determines if the test prints verbose output.

Specified by:

isVerbose in interface IndependenceTest

Returns:

True if the test prints verbose output, false otherwise.

setVerbose

public void setVerbose(boolean verbose)

Sets whether this test will print verbose output.

Specified by:

setVerbose in interface IndependenceTest

Parameters:

verbose - True, if so.

toString

public String toString()

Returns a string representation of this object.

Specified by:

toString in interface IndependenceTest

Overrides:

toString in class Object

Returns:

the string representation of this object.