CostDeltaAcceptanceFunction.hpp

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#pragma once

#include <boost/shared_ptr.hpp>
#include <random>

#include "AcceptanceFunction.hpp"

namespace ISM {

class CostDeltaAcceptanceFunction : public AcceptanceFunction
{
        public:
                CostDeltaAcceptanceFunction(double initalAcceptableCostDelta, double costDeltaDecreaseFactor)
                        : mInitialAcceptableCostDelta(initalAcceptableCostDelta) 
                        , mCurrentAcceptableCostDelta(initalAcceptableCostDelta) 
                        , mCostDeltaDecreaseFactor(costDeltaDecreaseFactor)
                {}

                bool isNewCostAcceptable(double newCost, double oldCost);
                void update();
                void reset();

        private:
                double mInitialAcceptableCostDelta; 
                double mCurrentAcceptableCostDelta; 
                double mCostDeltaDecreaseFactor;

}; typedef boost::shared_ptr<CostDeltaAcceptanceFunction> CostDeltaAcceptanceFunctionPtr;

}