sMMALAProposal.h

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#ifndef SMMALAPROPOSAL_H_
#define SMMALAPROPOSAL_H_
 
#include "MUQ/Modeling/Distributions/Gaussian.h"
#include "MUQ/Modeling/ModPiece.h"
 
#include "MUQ/SamplingAlgorithms/MCMCProposal.h"
 
namespace muq {
  namespace SamplingAlgorithms {
 
    
    class SMMALAProposal : public MCMCProposal {
    public:
 
      SMMALAProposal(boost::property_tree::ptree                   pt,
                     std::shared_ptr<AbstractSamplingProblem> const& probIn,
                     std::shared_ptr<muq::Modeling::ModPiece> const& forwardModIn,
                     std::shared_ptr<muq::Modeling::Gaussian> const& priorIn,
                     std::shared_ptr<muq::Modeling::Gaussian> const& likelihoodIn);
 
      virtual ~SMMALAProposal() = default;
 
    protected:
 
      const double meanScaling = 0.5;
 
      double stepSize;
 
      std::shared_ptr<muq::Modeling::Gaussian> prior;
      std::shared_ptr<muq::Modeling::Gaussian> likelihood;
      std::shared_ptr<muq::Modeling::ModPiece> model;
 
 
      virtual std::shared_ptr<SamplingState> Sample(std::shared_ptr<SamplingState> const& currentState) override;
 
      virtual double LogDensity(std::shared_ptr<SamplingState> const& currState,
                                std::shared_ptr<SamplingState> const& propState) override;
 
 
    };
 
  } // namespace SamplingAlgoirthms
} // namespace muq
 
#endif