MueLu_AvatarInterface.hpp

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//        MueLu: A package for multigrid based preconditioning
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#ifndef MUELU_AVATARINTERFACE_HPP
#define MUELU_AVATARINTERFACE_HPP

#include <string>
#include "Teuchos_Comm.hpp"
#include "Teuchos_RCP.hpp"
#include "Teuchos_ArrayRCP.hpp"
#include "Teuchos_ParameterList.hpp"
#include "MueLu_BaseClass.hpp"


#ifdef HAVE_MUELU_AVATAR


// Forward declaration
struct Avatar_struct;
typedef struct Avatar_struct Avatar_handle;

namespace MueLu {

  class AvatarInterface : public BaseClass {

  public:

    AvatarInterface(Teuchos::RCP<const Teuchos::Comm<int> >& comm ):comm_(comm) {}

    AvatarInterface(Teuchos::RCP<const Teuchos::Comm<int> >& comm, Teuchos::ParameterList& inParams):comm_(comm),params_(inParams){};

    ~AvatarInterface(){Cleanup();}

    Teuchos::RCP<const Teuchos::ParameterList> GetValidParameterList() const;

    // Sets the input parameters for the AvatarInterface
    void SetParameterList(Teuchos::ParameterList& inParams) {params_ = inParams;}

    // Sets up Avatar
    void Setup();

    // Calls Avatar to set MueLu Parameters
    void SetMueLuParameters(const Teuchos::ParameterList & problemFeatures, Teuchos::ParameterList & mueluParams, bool overwrite=true) const;

    // Clean up the handle
    void Cleanup();

    // Returns 1 if the given parameters are within same 
    // same domain as training data, 0 otherwise
    int checkBounds(std::string trialString, Teuchos::ArrayRCP<std::string> boundsString) const;

    int hybrid(float * probabilities, std::vector<int> acceptableCombos) const; 

    int highProb(float * probabilities, std::vector<int> acceptableCombos) const; 
 
    int lowCrash(float * probabilities, std::vector<int> acceptableCombos) const; 

    int weighted(float * probabilities, std::vector<int> acceptableCombos) const; 

  private:
    // Utility functions
    Teuchos::ArrayRCP<std::string> ReadFromFiles(const char * param_name) const;
    void GenerateFeatureString(const Teuchos::ParameterList & problemFeatures, std::string & featureString) const;
    std::string ParamsToString(const std::vector<int> & indices) const;
    void SetIndices(int id,std::vector<int> & indices) const;
    void GenerateMueLuParametersFromIndex(int id,Teuchos::ParameterList & pl) const;
    void UnpackMueLuMapping();

    // Cached data
    Teuchos::RCP<const Teuchos::Comm<int> > comm_;
    mutable Teuchos::ParameterList params_; // The mutable is a hack to deal with issues in Teuchos
    Teuchos::ArrayRCP<std::string> avatarStrings_;
    Teuchos::ArrayRCP<std::string> namesStrings_;
    Teuchos::Array<std::string> filestem_;
    Teuchos::ArrayRCP<std::string> boundsString_;
    int avatarGoodClass_;
    int heuristicToUse_;

    // RCP's don't handle opaque pointers well
    Avatar_handle * avatarHandle_;

    Teuchos::Array<std::string> mueluParameterName_;
    Teuchos::Array<std::string> avatarParameterName_;

    Teuchos::ArrayRCP<Teuchos::Array<double> > mueluParameterValues_;
    Teuchos::ArrayRCP<Teuchos::Array<double> > avatarParameterValues_;

  };


} // namespace MueLu

#endif// HAVE_MUELU_AVATAR

#endif // MUELU_AVATARINTERFACE_HPP