class CBNSJunctionTree

This class stores the set of cliques, separators and charges generated by the CBNSGraph class and is used for Evidence propagation

Public Fields

static int

m_nCounter This variable is used to check for the memory leaks in the program

Public

	Constructor and Destructor CBNSJunctionTree () Default Constructor ~CBNSJunctionTree () Destructor
	Out Functions CBNSSet <CBNSClique *> GetCliqueSet () Returns the set of cliques in the Junction Tree CBNSSet <CBNSSeparator *> GetSeparatorSet () Returns the set of separators in the Junction Tree CBNSSet <CBNSCharge *> GetChargeSet () Returns the set of charges in the Junction Tree
	In Functions void SetCliqueSet (CBNSSet<CBNSClique *>& CliqueSet) Assigns the Clique Set to CliqueSet void SetSeparatorSet (CBNSSet<CBNSSeparator *>& SeparatorSet) Assigns the Clique Set to CliqueSet void SetChargeSet (CBNSSet<CBNSCharge *>& ChargeSet) Assigns the Charge Set to CliqueSet
	Message Propagation void DistributeEvidence () Distributes the Evidence from the root of the Junction Tree void CollectEvidence () Collects the Evidence void Propagate (eBNSPropagationMethod method = PROPAGATION_DEFAULT) Propagates the Evidence bool NeedsPropagation () Return true if the Junction Tree needs propagation
	Other Utility Functions void AssignProbNodes (CBNSNetwork *pNetwork) Assigns the probability nodes to the cliques void PrintNodeProbability (CBNSNode *pNode) Prints the probability of pNode to the console void SetEvidence (CBNSNode *pNode, int nStateIndex) Sets the Evidence for a Node to a particular state void CreatePotentials () Creates potential tables for the cliques and separators

Private

bool m_bIsPropagated This variable is true if the Junction tree is propagated CBNSClique* m_pRootClique Pointer to Root Clique CBNSSet <CBNSClique *> m_pCliqueSet Set of Cliques CBNSSet <CBNSSeparator *> m_pSeparatorSet Set of Separators CBNSSet <CBNSCharge *> m_pChargeSet Set of Charges

static int m_nCounter

This variable is used to check for the memory leaks in the program

Constructor and Destructor

CBNSJunctionTree()

Default Constructor

~CBNSJunctionTree()

Destructor

Out Functions

CBNSSet <CBNSClique *> GetCliqueSet()

Returns the set of cliques in the Junction Tree

Returns:

CBNSSet

CBNSSet <CBNSSeparator *> GetSeparatorSet()

Returns the set of separators in the Junction Tree

Returns:

CBNSSet

CBNSSet <CBNSCharge *> GetChargeSet()

Returns the set of charges in the Junction Tree

Returns:

CBNSSet

In Functions

void SetCliqueSet(CBNSSet<CBNSClique *>& CliqueSet)

Assigns the Clique Set to CliqueSet

Parameters:

CliqueSet - a referece to a CBNSSet of pointers to CBNSClique

void SetSeparatorSet(CBNSSet<CBNSSeparator *>& SeparatorSet)

Assigns the Clique Set to CliqueSet

Parameters:

SeparatorSet - a referece to a CBNSSet of pointers to CBNSSeparator

void SetChargeSet(CBNSSet<CBNSCharge *>& ChargeSet)

Assigns the Charge Set to CliqueSet

Parameters:

ChargeSet - a referece to a CBNSSet of pointers to CBNSCharge

Message Propagation

void DistributeEvidence()

Distributes the Evidence from the root of the Junction Tree

void CollectEvidence()

Collects the Evidence

void Propagate(eBNSPropagationMethod method = PROPAGATION_DEFAULT)

Propagates the Evidence

Parameters:

method - a default propagation scheme is used now, further implementation should include other propagation schemes

bool NeedsPropagation()

Return true if the Junction Tree needs propagation

Returns:

bool

Other Utility Functions

void AssignProbNodes(CBNSNetwork *pNetwork)

Assigns the probability nodes to the cliques

void PrintNodeProbability(CBNSNode *pNode)

Prints the probability of pNode to the console

Parameters:

pNode - a pointer to CBNSNode

void SetEvidence(CBNSNode *pNode, int nStateIndex)

Sets the Evidence for a Node to a particular state

Parameters:

pNode - a pointer to a node for which the evidence is set
nStateIndex - the probability of state nStateIndex is set to 1

void CreatePotentials()

Creates potential tables for the cliques and separators

bool m_bIsPropagated

This variable is true if the Junction tree is propagated

CBNSClique* m_pRootClique

Pointer to Root Clique

CBNSSet <CBNSClique *> m_pCliqueSet

Set of Cliques

CBNSSet <CBNSSeparator *> m_pSeparatorSet

Set of Separators

CBNSSet <CBNSCharge *> m_pChargeSet

Set of Charges

This class has no child classes.

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