Package edu.cmu.tetrad.search.utils

Class SepsetsSet

java.lang.Object

edu.cmu.tetrad.search.utils.SepsetsSet

All Implemented Interfaces:

SepsetProducer

public class SepsetsSet
extends Object
implements SepsetProducer

Provides a sepset producer using conditional independence tests to generate the Sepset map.

Version:

$Id: $Id

Author:

josephramsey

See Also:

• SepsetProducer
• SepsetMap

Constructor Summary

Constructors

Constructor	Description
SepsetsSet(SepsetMap sepsets, IndependenceTest test)	Constructor for SepsetsSet.

Method Summary

Modifier and Type	Method	Description
double	getPValue(Node a, Node b, Set<Node> sepset)	Calculates the p-value for a statistical test a _||_ b | sepset.
double	getScore()	Returns the score of the object.
Set<Node>	getSepset(Node a, Node b, int depth, List<Node> order)	Retrieves the sepset between two nodes.
Set<Node>	getSepsetContaining(Node a, Node b, Set<Node> s, int depth)	Retrieves the sepset for a and b, where we are expecting this sepset to contain all the nodes in s.
List<Node>	getVariables()	Retrieves the list of variables.
boolean	isIndependent(Node a, Node b, Set<Node> sepset)	Checks if node d is independent of node c given the set of nodes in sepset.
boolean	isUnshieldedCollider(Node i, Node j, Node k, int depth)	isUnshieldedCollider.
boolean	isVerbose()	isVerbose.
void	setGraph(Graph graph)	Sets the graph for the SepsetProducer object.
void	setVerbose(boolean verbose)	Sets the verbose mode of the SepsetProducer.

Methods inherited from class java.lang.Object

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

Constructor Details

SepsetsSet

public SepsetsSet(SepsetMap sepsets,
 IndependenceTest test)

Constructor for SepsetsSet.

Parameters:

sepsets - a SepsetMap object

test - a IndependenceTest object

Method Details

getSepset

public Set<Node> getSepset(Node a,
 Node b,
 int depth,
 List<Node> order)

Retrieves the sepset between two nodes.

Specified by:

getSepset in interface SepsetProducer

Parameters:

a - the first node

b - the second node

depth - the depth of the search

order - The order of the nodes, used for some implementations.

Returns:

the set of nodes in the sepset between a and b

getSepsetContaining

public Set<Node> getSepsetContaining(Node a,
 Node b,
 Set<Node> s,
 int depth)

Retrieves the sepset for a and b, where we are expecting this sepset to contain all the nodes in s.

Specified by:

getSepsetContaining in interface SepsetProducer

Parameters:

a - the first node

b - the second node

s - the set of nodes to check in the sepset of a and b

depth - the depth of the search

Returns:

the set of nodes that the sepset of a and b is expected to contain.

Throws:

IllegalArgumentException - if the sepset of a and b does not contain all the nodes in s

getPValue

public double getPValue(Node a,
 Node b,
 Set<Node> sepset)

Description copied from interface: SepsetProducer

Calculates the p-value for a statistical test a _||_ b | sepset.

Specified by:

getPValue in interface SepsetProducer

Parameters:

a - the first node

b - the second node

sepset - the set of nodes

Returns:

the p-value for the statistical test

Throws:

UnsupportedOperationException - if this method is called

setGraph

public void setGraph(Graph graph)

Description copied from interface: SepsetProducer

Sets the graph for the SepsetProducer object.

Specified by:

setGraph in interface SepsetProducer

Parameters:

graph - the graph to set

isUnshieldedCollider

public boolean isUnshieldedCollider(Node i,
 Node j,
 Node k,
 int depth)

isUnshieldedCollider.

Specified by:

isUnshieldedCollider in interface SepsetProducer

Parameters:

i - a Node object

j - a Node object

k - a Node object

depth - the depth of the search

Returns:

a boolean

isIndependent

public boolean isIndependent(Node a,
 Node b,
 Set<Node> sepset)
                      throws InterruptedException

Checks if node d is independent of node c given the set of nodes in sepset.

Specified by:

isIndependent in interface SepsetProducer

Parameters:

a - the first node

b - the second node

sepset - the set of common neighbors between d and c

Returns:

true if d is independent of c, false otherwise

Throws:

InterruptedException - if any

getScore

public double getScore()

Returns the score of the object.

Specified by:

getScore in interface SepsetProducer

Returns:

the score value

getVariables

public List<Node> getVariables()

Retrieves the list of variables.

Specified by:

getVariables in interface SepsetProducer

Returns:

the list of variables as a List of Node objects.

isVerbose

public boolean isVerbose()

isVerbose.

Returns:

a boolean

setVerbose

public void setVerbose(boolean verbose)

Sets the verbose mode of the SepsetProducer.

Specified by:

setVerbose in interface SepsetProducer

Parameters:

verbose - true if verbose mode is enabled, false otherwise