Package edu.cmu.tetrad.search

Class SepsetMap

java.lang.Object

edu.cmu.tetrad.search.SepsetMap

All Implemented Interfaces:

TetradSerializable, Serializable

public final class SepsetMap
extends Object
implements TetradSerializable

Stores a map from pairs of nodes to separating sets--that is, for each unordered pair of nodes {node1, node2} in a graph, stores a set of nodes conditional on which node1 and node2 are independent (where the nodes are considered as variables) or stores null if the pair was not judged to be independent. (Note that if a sepset is non-null and empty, that should means that the compared nodes were found to be independent conditional on the empty set, whereas if a sepset is null, that should mean that no set was found yet conditional on which the compared nodes are independent. So at the end of the search, a null sepset carries different information from an empty sepset.)> 0

We cast the variable-like objects to Node to allow them either to be variables explicitly or else to be graph nodes that in some model could be considered as variables. This allows us to use d-separation as a graphical indicator of what independendence in models ideally should be.> 0

Author:

Joseph Ramsey

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
SepsetMap()
SepsetMap(SepsetMap map)

Method Summary

Modifier and Type	Method	Description
void	addAll(SepsetMap newSepsets)
boolean	equals(Object o)
HashSet<Node>	get(Node x)
List<Node>	get(Node a, Node b)	Retrieves the sepset previously set for {a, b}, or null if no such set was previously set.
double	getPValue(Node x, Node y)
static SepsetMap	serializableInstance()	Generates a simple exemplar of this class to test serialization.
void	set(Node x, Node y, List<Node> z)	Sets the sepset for {x, y} to be z.
void	set(Node x, LinkedHashSet<Node> z)
int	size()
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

SepsetMap

public SepsetMap()

SepsetMap

public SepsetMap(SepsetMap map)

Method Details

serializableInstance

public static SepsetMap serializableInstance()

Generates a simple exemplar of this class to test serialization.

set

public void set(Node x,
 Node y,
 List<Node> z)

Sets the sepset for {x, y} to be z. Note that {x, y} is unordered.

get

public List<Node> get(Node a,
 Node b)

Retrieves the sepset previously set for {a, b}, or null if no such set was previously set.

getPValue

public double getPValue(Node x,
 Node y)

set

public void set(Node x,
 LinkedHashSet<Node> z)

get

public HashSet<Node> get(Node x)

equals

public boolean equals(Object o)

Overrides:

equals in class Object

size

public int size()

toString

public String toString()

Overrides:

toString in class Object

addAll

public void addAll(SepsetMap newSepsets)