You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
203 lines
6.8 KiB
203 lines
6.8 KiB
//+-------------------------------------------------------------------------
|
|
//
|
|
// Microsoft Windows
|
|
//
|
|
// Copyright (C) Microsoft Corporation, 1997 - 1997
|
|
//
|
|
// File: cliqset.h
|
|
//
|
|
//--------------------------------------------------------------------------
|
|
|
|
//
|
|
// cliqset.h: Definitions for the clique set object.
|
|
//
|
|
#ifndef _CLIQSET_H_
|
|
#define _CLIQSET_H_
|
|
|
|
#include "gmobj.h"
|
|
#include "infer.h"
|
|
|
|
class GEDGEMBN_CLIQ;
|
|
|
|
// Counters maintained in the inference engine
|
|
struct CLIQSETSTAT
|
|
{
|
|
long _cReload; // Number of times clique tree was reloaded
|
|
long _cCollect; // Number of collect operations
|
|
long _cEnterEv; // Number of calls to EnterEvidence
|
|
long _cGetBel; // Number of calls to GetBelief
|
|
long _cProbNorm; // Number of calls to ProbNorm
|
|
|
|
CLIQSETSTAT () { Clear(); }
|
|
void Clear ()
|
|
{
|
|
_cReload = 0;
|
|
_cCollect = 0;
|
|
_cEnterEv = 0;
|
|
_cGetBel = 0;
|
|
_cProbNorm = 0;
|
|
}
|
|
};
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
////////////////////////////////////////////////////////////////////
|
|
//
|
|
// GOBJMBN_CLIQSET:
|
|
//
|
|
// Since any model may decompose into a set of clique trees
|
|
// (assemblages with no interconnections whatever), a CLIQSET
|
|
// is defined as the join point or grouping for the clique
|
|
// tree "forest".
|
|
//
|
|
////////////////////////////////////////////////////////////////////
|
|
////////////////////////////////////////////////////////////////////
|
|
|
|
class GOBJMBN_CLIQSET: public GOBJMBN_INFER_ENGINE
|
|
{
|
|
friend class CLIQSETWORK;
|
|
|
|
public:
|
|
GOBJMBN_CLIQSET ( MBNET & model,
|
|
REAL rMaxEstimatedSize = -1.0,
|
|
int iInferEngID = 0 );
|
|
|
|
virtual ~ GOBJMBN_CLIQSET ();
|
|
|
|
virtual INT EType () const
|
|
{ return EBNO_CLIQUE_SET; }
|
|
|
|
virtual void Create ();
|
|
virtual void Destroy ();
|
|
virtual void Reload ();
|
|
virtual void EnterEvidence ( GNODEMBN * pgnd, const CLAMP & clamp );
|
|
virtual void GetEvidence ( GNODEMBN * pgnd, CLAMP & clamp );
|
|
virtual void Infer ();
|
|
virtual void GetBelief ( GNODEMBN * pgnd, MDVCPD & mdvBel );
|
|
virtual PROB ProbNorm ();
|
|
virtual void Dump ();
|
|
|
|
// Return true if the state of information is impossible
|
|
bool BImpossible ();
|
|
|
|
enum ESTATE // State of the junction tree
|
|
{
|
|
CTOR, // Just constructed
|
|
UNDIR, // Undirected graph created
|
|
MORAL, // Moralized
|
|
CLIQUED, // Cliques constructed
|
|
BUILT, // Fully constructed
|
|
CONSISTENT, // Fully propagated
|
|
EVIDENCE // Unpropagated evidence present
|
|
};
|
|
|
|
ESTATE EState () const { return _eState; }
|
|
MBNET & Model () { return _model; }
|
|
INT IInferEngID () const { return _iInferEngID; }
|
|
|
|
// Force reloading of the clique tree and full inference
|
|
void SetReset ( bool bReset = true )
|
|
{ _bReset = bReset ; }
|
|
// Force full collect/distribute cycle
|
|
void SetCollect ( bool bCollect = true )
|
|
{ _bCollect = bCollect; }
|
|
|
|
// Provide access to inference statistics
|
|
CLIQSETSTAT & CqsetStat () { return _cqsetStat; }
|
|
|
|
protected:
|
|
ESTATE _eState; // State of junction tree
|
|
|
|
// Tallies
|
|
int _cCliques; // Number of cliques
|
|
int _cCliqueMemberArcs; // Number of clique member arcs
|
|
int _cSepsetArcs; // Number of sepsest (arcs)
|
|
int _cUndirArcs; // Undirected arcs in moral graph
|
|
|
|
// Inference control
|
|
bool _bCollect; // Is "collect/distribute" pass necessary?
|
|
bool _bReset; // Does tree need resetting?
|
|
REAL _probNorm; // Residual prob of tree
|
|
|
|
CLIQSETSTAT _cqsetStat; // Statistics
|
|
|
|
protected:
|
|
bool BCollect() const
|
|
{ return _bCollect; }
|
|
|
|
// Cliquing helper functions
|
|
int CNeighborUnlinked ( GNODEMBN * pgndmbn, bool bLinkNeighbors = false );
|
|
void Eliminate ( GNODEMBN * pgndmbn, CLIQSETWORK & clqsetWork ) ;
|
|
void GenerateCliques ( CLIQSETWORK & clqsetWork );
|
|
void CreateUndirectedGraph( bool bMarryParents = true );
|
|
void DestroyDirectedGraph ();
|
|
|
|
// Inference and tree maintenance
|
|
void Reset ();
|
|
void CollectEvidence ();
|
|
void DistributeEvidence ();
|
|
|
|
// Create (but don't init/load) all the clique and sepset marginals
|
|
void CreateMarginals();
|
|
// Load probabilities into cliques; initialize all the sepsets
|
|
void LoadMarginals ();
|
|
|
|
// Return the "family" or "self" clique for a node
|
|
GOBJMBN_CLIQUE * PCliqueFromNode ( GNODEMBN * pgnd,
|
|
bool bFamily,
|
|
GEDGEMBN_CLIQ * * ppgedgeClique = NULL );
|
|
|
|
// Typedefs for pointer-to-member-functions; used by Walk(). If bDownwards,
|
|
// then object is being enumerated on the way down the tree.
|
|
typedef bool (GOBJMBN_CLIQSET::*PFNC_JTREE) ( GOBJMBN_CLIQUE & clique,
|
|
bool bDownwards /*= true*/ );
|
|
typedef bool (GOBJMBN_CLIQSET::*PFNC_SEPSET) ( GEDGEMBN_SEPSET & sepset,
|
|
bool bDownwards /*= true*/ );
|
|
|
|
// Apply the given member function(s) to all cliques and/or sepsets,
|
|
// depth first.
|
|
int WalkTree ( bool bDepthFirst,
|
|
PFNC_JTREE pfJtree = NULL,
|
|
PFNC_SEPSET pfSepset = NULL );
|
|
|
|
// Apply the given member function to cliques and sepsets, depth first
|
|
int WalkDepthFirst ( GOBJMBN_CLIQUE * pClique,
|
|
PFNC_JTREE pfJtree = NULL,
|
|
PFNC_SEPSET pfSepset = NULL );
|
|
int WalkBreadthFirst ( GOBJMBN_CLIQUE * pClique,
|
|
PFNC_JTREE pfJtree = NULL,
|
|
PFNC_SEPSET pfSepset = NULL );
|
|
|
|
// Add an undirected arc iff there isn't one already.
|
|
bool BAddUndirArc ( GNODEMBN * pgndbnSource, GNODEMBN * pgndbnSink );
|
|
|
|
// Clique and sepset helper functions used during WalkTree().
|
|
bool BCreateClique ( GOBJMBN_CLIQUE & clique, bool bDownwards );
|
|
bool BLoadClique ( GOBJMBN_CLIQUE & clique, bool bDownwards );
|
|
bool BCreateSepset ( GEDGEMBN_SEPSET & sepset, bool bDownwards );
|
|
bool BLoadSepset ( GEDGEMBN_SEPSET & sepset, bool bDownwards );
|
|
|
|
bool BCollectEvidenceAtSepset ( GEDGEMBN_SEPSET & sepset, bool bDownwards );
|
|
bool BDistributeEvidenceAtSepset ( GEDGEMBN_SEPSET & sepset, bool bDownwards );
|
|
bool BCollectEvidenceAtRoot ( GOBJMBN_CLIQUE & clique, bool bDownwards );
|
|
bool BDistributeEvidenceAtRoot ( GOBJMBN_CLIQUE & clique, bool bDownwards );
|
|
|
|
bool BCollectInitEvidenceAtSepset ( GEDGEMBN_SEPSET & sepset, bool bDownwards );
|
|
bool BDistributeInitEvidenceAtSepset ( GEDGEMBN_SEPSET & sepset, bool bDownwards );
|
|
bool BCollectInitEvidenceAtRoot ( GOBJMBN_CLIQUE & clique, bool bDownwards );
|
|
bool BDistributeInitEvidenceAtRoot ( GOBJMBN_CLIQUE & clique, bool bDownwards );
|
|
|
|
// Perform initial inference collect/distribute cycle
|
|
void InferInit ();
|
|
void CollectEvidenceInit ();
|
|
void DistributeEvidenceInit ();
|
|
|
|
bool BDumpSepset ( GEDGEMBN_SEPSET & sepset, bool bDownwards );
|
|
bool BDumpClique ( GOBJMBN_CLIQUE & clique, bool bDownwards );
|
|
void CheckConsistency ();
|
|
bool BConsistentSepset ( GEDGEMBN_SEPSET & sepset, bool bDownwards );
|
|
|
|
private:
|
|
void Clear ();
|
|
};
|
|
|
|
#endif // _CLIQSET_H_
|