73 lines
1.6 KiB
C++
73 lines
1.6 KiB
C++
#ifndef YAP_PACKAGES_CLPBN_HORUS_BAYESBALL_H_
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#define YAP_PACKAGES_CLPBN_HORUS_BAYESBALL_H_
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#include <vector>
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#include <queue>
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#include <list>
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#include "FactorGraph.h"
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#include "BayesBallGraph.h"
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#include "Horus.h"
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namespace Horus {
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class BayesBall {
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public:
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BayesBall (FactorGraph& fg);
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FactorGraph* getMinimalFactorGraph (const VarIds&);
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static FactorGraph* getMinimalFactorGraph (FactorGraph& fg, VarIds vids);
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private:
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struct ScheduleInfo {
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ScheduleInfo (BBNode* n, bool vfp, bool vfc)
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: node(n), visitedFromParent(vfp), visitedFromChild(vfc) { }
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BBNode* node;
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bool visitedFromParent;
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bool visitedFromChild;
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};
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typedef std::queue<ScheduleInfo, std::list<ScheduleInfo>> Scheduling;
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void constructGraph (FactorGraph* fg) const;
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void scheduleParents (const BBNode* n, Scheduling& sch) const;
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void scheduleChilds (const BBNode* n, Scheduling& sch) const;
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FactorGraph& fg_;
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BayesBallGraph& dag_;
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};
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inline void
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BayesBall::scheduleParents (const BBNode* n, Scheduling& sch) const
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{
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const std::vector<BBNode*>& ps = n->parents();
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for (std::vector<BBNode*>::const_iterator it = ps.begin();
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it != ps.end(); ++it) {
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sch.push (ScheduleInfo (*it, false, true));
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}
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}
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inline void
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BayesBall::scheduleChilds (const BBNode* n, Scheduling& sch) const
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{
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const std::vector<BBNode*>& cs = n->childs();
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for (std::vector<BBNode*>::const_iterator it = cs.begin();
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it != cs.end(); ++it) {
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sch.push (ScheduleInfo (*it, true, false));
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}
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}
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} // namespace Horus
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#endif // YAP_PACKAGES_CLPBN_HORUS_BAYESBALL_H_
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