176 lines
3.8 KiB
C++
176 lines
3.8 KiB
C++
#ifndef YAP_PACKAGES_CLPBN_HORUS_COUNTINGBP_H_
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#define YAP_PACKAGES_CLPBN_HORUS_COUNTINGBP_H_
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#include <vector>
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#include <unordered_map>
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#include "GroundSolver.h"
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#include "FactorGraph.h"
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#include "Horus.h"
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namespace Horus {
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class VarCluster;
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class FacCluster;
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class WeightedBp;
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template <class T> inline size_t
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hash_combine (size_t seed, const T& v)
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{
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return seed ^ (std::hash<T>()(v) + 0x9e3779b9 + (seed << 6) + (seed >> 2));
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}
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} // namespace Horus
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namespace std {
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template <typename T1, typename T2> struct hash<std::pair<T1,T2>> {
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size_t operator() (const std::pair<T1,T2>& p) const {
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return Horus::hash_combine (std::hash<T1>()(p.first), p.second);
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}};
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template <typename T> struct hash<std::vector<T>>
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{
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size_t operator() (const std::vector<T>& vec) const
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{
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size_t h = 0;
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typename std::vector<T>::const_iterator first = vec.begin();
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typename std::vector<T>::const_iterator last = vec.end();
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for (; first != last; ++first) {
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h = Horus::hash_combine (h, *first);
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}
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return h;
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}
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};
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} // namespace std
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namespace Horus {
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class CountingBp : public GroundSolver {
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public:
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CountingBp (const FactorGraph& fg);
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~CountingBp();
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void printSolverFlags() const;
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Params solveQuery (VarIds);
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static void setFindIdenticalFactorsFlag (bool fif) { fif_ = fif; }
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private:
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typedef long Color;
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typedef std::vector<Color> Colors;
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typedef std::vector<std::pair<Color,unsigned>> VarSignature;
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typedef std::vector<Color> FacSignature;
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typedef std::vector<VarCluster*> VarClusters;
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typedef std::vector<FacCluster*> FacClusters;
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typedef std::unordered_map<unsigned, Color> DistColorMap;
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typedef std::unordered_map<unsigned, Colors> VarColorMap;
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typedef std::unordered_map<VarSignature, VarNodes> VarSignMap;
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typedef std::unordered_map<FacSignature, FacNodes> FacSignMap;
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typedef std::unordered_map<VarId, VarCluster*> VarClusterMap;
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Color getNewColor();
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Color getColor (const VarNode* vn) const;
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Color getColor (const FacNode* fn) const;
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void setColor (const VarNode* vn, Color c);
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void setColor (const FacNode* fn, Color c);
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void findIdenticalFactors();
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void setInitialColors();
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void createGroups();
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void createClusters (const VarSignMap&, const FacSignMap&);
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VarSignature getSignature (const VarNode*);
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FacSignature getSignature (const FacNode*);
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void printGroups (const VarSignMap&, const FacSignMap&) const;
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VarId getRepresentative (VarId vid);
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FacNode* getRepresentative (FacNode*);
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FactorGraph* getCompressedFactorGraph();
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std::vector<std::vector<unsigned>> getWeights() const;
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unsigned getWeight (const FacCluster*, const VarCluster*,
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size_t index) const;
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Color freeColor_;
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Colors varColors_;
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Colors facColors_;
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VarClusters varClusters_;
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FacClusters facClusters_;
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VarClusterMap varClusterMap_;
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const FactorGraph* compressedFg_;
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WeightedBp* solver_;
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static bool fif_;
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DISALLOW_COPY_AND_ASSIGN (CountingBp);
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};
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inline CountingBp::Color
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CountingBp::getNewColor()
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{
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++ freeColor_;
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return freeColor_ - 1;
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}
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inline CountingBp::Color
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CountingBp::getColor (const VarNode* vn) const
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{
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return varColors_[vn->getIndex()];
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}
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inline CountingBp::Color
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CountingBp::getColor (const FacNode* fn) const
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{
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return facColors_[fn->getIndex()];
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}
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inline void
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CountingBp::setColor (const VarNode* vn, CountingBp::Color c)
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{
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varColors_[vn->getIndex()] = c;
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}
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inline void
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CountingBp::setColor (const FacNode* fn, Color c)
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{
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facColors_[fn->getIndex()] = c;
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}
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} // namespace Horus
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#endif // YAP_PACKAGES_CLPBN_HORUS_COUNTINGBP_H_
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