Package edu.cmu.tetrad.search.test
Class IndTestConditionalGaussianLrt
java.lang.Object
edu.cmu.tetrad.search.test.IndTestConditionalGaussianLrt
- All Implemented Interfaces:
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.
Assumes a conditional Gaussian model and uses a likelihood ratio test.
- Author:
- josephramsey
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Constructor Summary
ConstructorsConstructorDescriptionIndTestConditionalGaussianLrt
(DataSet data, double alpha, boolean discretize) Constructor. -
Method Summary
Modifier and TypeMethodDescriptioncheckIndependence
(Node x, Node y, Set<Node> _z) Returns and independence result that states whether x _||_y | z and what the p-value of the test is.boolean
determines
(List<Node> z, Node y) Returns true if y is determined the variable in z.double
getAlpha()
Returns the significance level of the independence test.getData()
Returns the data.Returns the list of variables over which this independence checker is capable of determining independence relations.indTestSubset
(List<Node> vars) Returns an Independence test for a sublist of the variables.boolean
Returns true iff verbose output should be printed.void
setAlpha
(double alpha) Sets the significance level.void
setNumCategoriesToDiscretize
(int numCategoriesToDiscretize) Sets the number of categories used to discretize variables.void
setVerbose
(boolean verbose) Sets whether verbose output should be printed.toString()
Returns a string representation of this test.Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
Methods inherited from interface edu.cmu.tetrad.search.IndependenceTest
checkIndependence, determines, getCov, getDataSets, getSampleSize, getVariable, getVariableNames
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Constructor Details
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IndTestConditionalGaussianLrt
Constructor.- Parameters:
data
- The data to analyze.alpha
- The significance level.discretize
- Whether discrete children of continuous parents should be discretized.
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Method Details
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indTestSubset
Description copied from interface:IndependenceTest
Returns an Independence test for a sublist of the variables.- Specified by:
indTestSubset
in interfaceIndependenceTest
- Parameters:
vars
- The sublist of variables.- Throws:
javax.help.UnsupportedOperationException
- Method not implemented
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checkIndependence
Returns and independence result that states whether x _||_y | z and what the p-value of the test is.- Specified by:
checkIndependence
in interfaceIndependenceTest
- Returns:
- an independence result (see)
- See Also:
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getVariables
Returns the list of variables over which this independence checker is capable of determining independence relations.- Specified by:
getVariables
in interfaceIndependenceTest
- Returns:
- This list.
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determines
Returns true if y is determined the variable in z.- Returns:
- True, if so.
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getAlpha
public double getAlpha()Returns the significance level of the independence test.- Specified by:
getAlpha
in interfaceIndependenceTest
- Returns:
- This level.
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setAlpha
public void setAlpha(double alpha) Sets the significance level.- Specified by:
setAlpha
in interfaceIndependenceTest
- Parameters:
alpha
- This level.
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getData
Returns the data.- Specified by:
getData
in interfaceIndependenceTest
- Returns:
- This data.
- See Also:
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toString
Returns a string representation of this test.- Specified by:
toString
in interfaceIndependenceTest
- Overrides:
toString
in classObject
- Returns:
- This string.
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isVerbose
public boolean isVerbose()Returns true iff verbose output should be printed.- Specified by:
isVerbose
in interfaceIndependenceTest
- Returns:
- This.
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setVerbose
public void setVerbose(boolean verbose) Sets whether verbose output should be printed.- Specified by:
setVerbose
in interfaceIndependenceTest
- Parameters:
verbose
- True, if so.
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setNumCategoriesToDiscretize
public void setNumCategoriesToDiscretize(int numCategoriesToDiscretize) Sets the number of categories used to discretize variables.- Parameters:
numCategoriesToDiscretize
- This number, by default 3.
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