150 lines
3.0 KiB
C++
150 lines
3.0 KiB
C++
#ifndef HORUS_FACTORGRAPH_H
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#define HORUS_FACTORGRAPH_H
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#include <vector>
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#include "Factor.h"
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#include "BayesBallGraph.h"
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#include "Horus.h"
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using namespace std;
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class FacNode;
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class VarNode : public Var
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{
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public:
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VarNode (VarId varId, unsigned nrStates,
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int evidence = Constants::NO_EVIDENCE)
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: Var (varId, nrStates, evidence) { }
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VarNode (const Var* v) : Var (v) { }
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void addNeighbor (FacNode* fn) { neighs_.push_back (fn); }
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const FacNodes& neighbors (void) const { return neighs_; }
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private:
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FacNodes neighs_;
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DISALLOW_COPY_AND_ASSIGN (VarNode);
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};
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class FacNode
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{
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public:
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FacNode (const Factor& f) : factor_(f), index_(-1) { }
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const Factor& factor (void) const { return factor_; }
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Factor& factor (void) { return factor_; }
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void addNeighbor (VarNode* vn) { neighs_.push_back (vn); }
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const VarNodes& neighbors (void) const { return neighs_; }
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size_t getIndex (void) const { return index_; }
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void setIndex (size_t index) { index_ = index; }
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string getLabel (void) { return factor_.getLabel(); }
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private:
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VarNodes neighs_;
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Factor factor_;
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size_t index_;
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DISALLOW_COPY_AND_ASSIGN (FacNode);
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};
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class FactorGraph
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{
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public:
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FactorGraph (void) : bayesFactors_(false) { }
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FactorGraph (const FactorGraph&);
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~FactorGraph (void);
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const VarNodes& varNodes (void) const { return varNodes_; }
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const FacNodes& facNodes (void) const { return facNodes_; }
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void setFactorsAsBayesian (void) { bayesFactors_ = true; }
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bool bayesianFactors (void) const { return bayesFactors_; }
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size_t nrVarNodes (void) const { return varNodes_.size(); }
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size_t nrFacNodes (void) const { return facNodes_.size(); }
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VarNode* getVarNode (VarId vid) const
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{
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VarMap::const_iterator it = varMap_.find (vid);
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return it != varMap_.end() ? it->second : 0;
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}
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void readFromUaiFormat (const char*);
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void readFromLibDaiFormat (const char*);
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void addFactor (const Factor& factor);
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void addVarNode (VarNode*);
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void addFacNode (FacNode*);
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void addEdge (VarNode*, FacNode*);
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bool isTree (void) const;
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BayesBallGraph& getStructure (void);
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void print (void) const;
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void exportToGraphViz (const char*) const;
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void exportToUaiFormat (const char*) const;
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void exportToLibDaiFormat (const char*) const;
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private:
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void ignoreLines (std::ifstream&) const;
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bool containsCycle (void) const;
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bool containsCycle (const VarNode*, const FacNode*,
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vector<bool>&, vector<bool>&) const;
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bool containsCycle (const FacNode*, const VarNode*,
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vector<bool>&, vector<bool>&) const;
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VarNodes varNodes_;
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FacNodes facNodes_;
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BayesBallGraph structure_;
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bool bayesFactors_;
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typedef unordered_map<unsigned, VarNode*> VarMap;
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VarMap varMap_;
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DISALLOW_ASSIGN (FactorGraph);
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};
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struct sortByVarId
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{
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bool operator()(VarNode* vn1, VarNode* vn2) {
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return vn1->varId() < vn2->varId();
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}
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};
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#endif // HORUS_FACTORGRAPH_H
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