Class IndTestMulti

java.lang.Object

edu.cmu.tetrad.search.test.IndTestMulti

All Implemented Interfaces:

IndependenceTest

public final class IndTestMulti
extends Object
implements IndependenceTest

A class that represents a pooled independence test for multiple data sets.

Constructor Summary

Constructors

Constructor	Description
IndTestMulti(List<IndependenceTest> independenceTests, ResolveSepsets.Method method)	Constructs a new pooled independence test for the given data sets.

Method Summary

Modifier and Type	Method	Description
IndependenceResult	checkIndependence(Node x, Node y, Set<Node> z)	Determines whether variable x is independent of variable y given a list of conditioning variables z.
boolean	determines(List<Node> z, Node x)	Determines whether variable x is independent of variable y given a list of conditioning variables z.
double	getAlpha()	Returns the alpha of the component tests (they are required to agree; the first is reported).
DataModel	getData()	Returns the data of the first component test; the pooled test has no single data set.
List<IndependenceTest>	getIndependenceTests()	Retrieves the list of independence tests managed by this instance.
List<Node>	getVariables()	Retrieves the list of variables associated with this independence test.
IndependenceTest	indTestSubset(List<Node> vars)	Returns an Independence test for a sublist of the variables.
boolean	isVerbose()	Returns true if the test prints verbose output.
void	setAlpha(double alpha)	Sets the alpha level on every component test and clears the cache.
void	setVerbose(boolean verbose)	Sets whether verbose output should be printed during the test.
String	toString()	Returns a string representation of this test.

Methods inherited from class Object

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

Methods inherited from interface IndependenceTest

canBeSubsampled, checkIndependence, determines, getCov, getDataSets, getMissingValueSupport, getSampleSize, getVariable, getVariableNames, isPValueAProbability

Constructor Details

IndTestMulti

public IndTestMulti(List<IndependenceTest> independenceTests,
 ResolveSepsets.Method method)

Constructs a new pooled independence test for the given data sets.

Parameters:

independenceTests - the independence tests to pool.

method - the method to use for pooling.

See Also:

• ResolveSepsets.Method

Method Details

indTestSubset

public IndependenceTest indTestSubset(List<Node> vars)

Returns an Independence test for a sublist of the variables.

Specified by:

indTestSubset in interface IndependenceTest

Parameters:

vars - The sublist of variables.

Returns:

an IndependenceTest object

checkIndependence

public IndependenceResult checkIndependence(Node x,
 Node y,
 Set<Node> z)
                                     throws InterruptedException

Determines whether variable x is independent of variable y given a list of conditioning variables z.

Specified by:

checkIndependence in interface IndependenceTest

Parameters:

x - a Node object

y - a Node object

z - a Set object

Returns:

a IndependenceResult object

Throws:

InterruptedException - If the process is interrupted during the execution.

getAlpha

public double getAlpha()

Returns the alpha of the component tests (they are required to agree; the first is reported).

Specified by:

getAlpha in interface IndependenceTest

Returns:

the alpha level.

setAlpha

public void setAlpha(double alpha)

Sets the alpha level on every component test and clears the cache.

Specified by:

setAlpha in interface IndependenceTest

Parameters:

alpha - the alpha level.

getVariables

public List<Node> getVariables()

Description copied from interface: IndependenceTest

Retrieves the list of variables associated with this independence test.

Specified by:

getVariables in interface IndependenceTest

Returns:

A list of Node objects representing the variables.

determines

public boolean determines(List<Node> z,
 Node x)
                   throws UnsupportedOperationException

Determines whether variable x is independent of variable y given a list of conditioning variables z.

Parameters:

z - A list of conditioning variables.

x - The variable x.

Returns:

True if variable x is independent of variable y given the conditioning variables z, false otherwise.

Throws:

UnsupportedOperationException - if the method is not implemented.

getData

public DataModel getData()

Returns the data of the first component test; the pooled test has no single data set.

Specified by:

getData in interface IndependenceTest

Returns:

the first component test's data.

getIndependenceTests

public List<IndependenceTest> getIndependenceTests()

Retrieves the list of independence tests managed by this instance. The returned list is unmodifiable to ensure the integrity of the underlying data.

Returns:

an unmodifiable list of IndependenceTest objects.

toString

public String toString()

Description copied from interface: IndependenceTest

Returns a string representation of this test.

Specified by:

toString in interface IndependenceTest

Overrides:

toString in class Object

Returns:

This string.

isVerbose

public boolean isVerbose()

Returns true 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 verbose output should be printed during the test.

Specified by:

setVerbose in interface IndependenceTest

Parameters:

verbose - True to enable verbose output, false otherwise.