regress.h

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#ifndef GUM_REGRESS_H
#define GUM_REGRESS_H

#include <agrum/multidim/implementations/multiDimFunctionGraph.h>
#include <agrum/multidim/utils/FunctionGraphUtilities/operators/o4DGContext.h>
#include <agrum/multidim/utils/FunctionGraphUtilities/terminalNodePolicies/ExactTerminalNodePolicy.h>

namespace gum {

  template < typename GUM_SCALAR,
             template < typename >
             class COMBINEOPERATOR,
             template < typename >
             class PROJECTOPERATOR,
             template < typename > class TerminalNodePolicy =
                ExactTerminalNodePolicy >
  class Regress {
    public:
    // ============================================================================
    // ============================================================================

    Regress(
       const MultiDimFunctionGraph< GUM_SCALAR, TerminalNodePolicy >* vfunction,
       const MultiDimFunctionGraph< GUM_SCALAR, TerminalNodePolicy >* probDist,
       const Set< const DiscreteVariable* >*                          primedVars,
       const DiscreteVariable*                                        targetVar,
       const GUM_SCALAR                                               neutral);

    ~Regress();


    // ============================================================================
    // ============================================================================

    MultiDimFunctionGraph< GUM_SCALAR, TerminalNodePolicy >* compute();


    private:
    void __establishVarOrder();

    void __findRetrogradeVariables(
       const MultiDimFunctionGraph< GUM_SCALAR, TerminalNodePolicy >* dg,
       HashTable< NodeId, short int* >&                               dgInstNeed);

    NodeId __compute(O4DGContext& currentSituation, Idx lastInstVarPos);

    const MultiDimFunctionGraph< GUM_SCALAR, TerminalNodePolicy >* __DG1;

    const MultiDimFunctionGraph< GUM_SCALAR, TerminalNodePolicy >* __DG2;

    MultiDimFunctionGraph< GUM_SCALAR, TerminalNodePolicy >* __rd;

    const Set< const DiscreteVariable* >* __primedVars;

    const DiscreteVariable* __targetVar;

    const GUM_SCALAR __neutral;

    Idx __nbVar;

    const COMBINEOPERATOR< GUM_SCALAR > __combine;
    const PROJECTOPERATOR< GUM_SCALAR > __project;

    HashTable< double, NodeId > __explorationTable;

    HashTable< NodeId, short int* > __DG1InstantiationNeeded;
    HashTable< NodeId, short int* > __DG2InstantiationNeeded;

    short int* __default;
  };

#ifndef GUM_NO_EXTERN_TEMPLATE_CLASS
  extern template class Regress< double, std::multiplies, std::plus >;
#endif

}   // namespace gum

#include <agrum/multidim/utils/FunctionGraphUtilities/operators/regress_tpl.h>

#endif   // GUM_REGRESS_H