ParameterRegion.h

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#pragma once
 
#include <map>
 
#include "storm-pars/analysis/MonotonicityResult.h"
#include "storm-pars/utility/parametric.h"
#include "storm/solver/OptimizationDirection.h"
 
namespace storm {
namespace storage {
template<typename ParametricType>
class ParameterRegion {
   public:
    typedef typename storm::utility::parametric::VariableType<ParametricType>::type VariableType;
    typedef typename storm::utility::parametric::CoefficientType<ParametricType>::type CoefficientType;
    typedef typename storm::utility::parametric::Valuation<ParametricType> Valuation;
 
    ParameterRegion();
    ParameterRegion(Valuation const& lowerBoundaries, Valuation const& upperBoundaries);
    ParameterRegion(Valuation&& lowerBoundaries, Valuation&& upperBoundaries);
    ParameterRegion(ParameterRegion<ParametricType> const& other) = default;
    ParameterRegion(ParameterRegion<ParametricType>&& other) = default;
    ParameterRegion<ParametricType>& operator=(ParameterRegion<ParametricType> const& other) = default;
 
    virtual ~ParameterRegion() = default;
 
    std::set<VariableType> const& getVariables() const;
    std::multimap<CoefficientType, VariableType> const& getVariablesSorted() const;
    CoefficientType const& getLowerBoundary(VariableType const& variable) const;
    CoefficientType const& getLowerBoundary(const std::string varName) const;
    CoefficientType const& getUpperBoundary(VariableType const& variable) const;
    CoefficientType const& getUpperBoundary(const std::string varName) const;
    CoefficientType getDifference(const std::string varName) const;
    CoefficientType getDifference(VariableType const& variable) const;
    Valuation const& getLowerBoundaries() const;
    Valuation const& getUpperBoundaries() const;
 
    std::vector<Valuation> getVerticesOfRegion(std::set<VariableType> const& consideredVariables) const;
 
    Valuation getSomePoint() const;
 
    Valuation getCenterPoint() const;
 
    CoefficientType area() const;
 
    void split(Valuation const& splittingPoint, std::vector<ParameterRegion<ParametricType>>& regionVector) const;
    void split(Valuation const& splittingPoint, std::vector<ParameterRegion<ParametricType>>& regionVector,
               std::set<VariableType> const& consideredVariables) const;
 
    Valuation getPoint(storm::solver::OptimizationDirection dir, storm::analysis::MonotonicityResult<VariableType>& monRes) const;
    Valuation getPoint(storm::solver::OptimizationDirection dir, std::set<VariableType> const& possibleMonotoneIncrParameters,
                       std::set<VariableType> const& monDecrParameters) const;
 
    // returns the region as string in the format 0.3<=p<=0.4,0.2<=q<=0.5;
    std::string toString(bool boundariesAsDouble = false) const;
 
    bool isSubRegion(ParameterRegion<ParametricType> region);
 
    CoefficientType getBoundParent();
    void setBoundParent(CoefficientType bound);
 
   private:
    void init();
 
    bool lastSplitMonotone = false;
    uint_fast64_t splitThreshold;
 
    Valuation lowerBoundaries;
    Valuation upperBoundaries;
    std::set<VariableType> variables;
    std::multimap<CoefficientType, VariableType> sortedOnDifference;
    CoefficientType parentBound;
};
 
template<typename ParametricType>
std::ostream& operator<<(std::ostream& out, ParameterRegion<ParametricType> const& region);
 
}  // namespace storage
}  // namespace storm