ROL_TypeG_StabilizedLCLAlgorithm.hpp

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// @HEADER
// *****************************************************************************
//               Rapid Optimization Library (ROL) Package
//
// Copyright 2014 NTESS and the ROL contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER
 
#ifndef ROL_TYPEG_STABILIZEDLCLALGORITHM_H
#define ROL_TYPEG_STABILIZEDLCLALGORITHM_H
 
#include "ROL_TypeG_Algorithm.hpp"
#include "ROL_AugmentedLagrangianObjective.hpp"
#include "ROL_ElasticLinearConstraint.hpp"
#include "ROL_ElasticObjective.hpp"
#include "ROL_Secant.hpp"

 
namespace ROL {
namespace TypeG {
 
template<typename Real>
class StabilizedLCLAlgorithm : public TypeG::Algorithm<Real> {
private:
  const Ptr<Secant<Real>> secant_;
  ParameterList list_;
  // Lagrange multiplier update
  bool useDefaultInitPen_;
  bool scaleLagrangian_;
  Real penaltyUpdate_;
  Real maxPenaltyParam_;
  Real sigma_;
  Real sigmaMax_;
  Real sigmaUpdate_;
  // Optimality tolerance update
  Real optIncreaseExponent_;
  Real optDecreaseExponent_;
  Real optToleranceInitial_;
  Real optTolerance_;
  // Feasibility tolerance update
  Real feasIncreaseExponent_;
  Real feasDecreaseExponent_;
  Real feasToleranceInitial_;
  Real feasTolerance_;
  // Subproblem information
  int maxit_;
  int subproblemIter_;
  std::string subStep_;
  int HessianApprox_;
  Real outerOptTolerance_;
  Real outerFeasTolerance_;
  Real outerStepTolerance_;
  // Scaling information
  bool useDefaultScaling_;
  Real fscale_;
  Real cscale_;
  // Verbosity flag
  int verbosity_;
  bool printHeader_;
  bool hasPolyProj_;
 
  using TypeG::Algorithm<Real>::state_;
  using TypeG::Algorithm<Real>::status_;
  using TypeG::Algorithm<Real>::proj_;
 
  void initialize(Vector<Real>           &x,
                  const Vector<Real>     &g,
                  const Vector<Real>     &l,
                  const Vector<Real>     &c,
                  ElasticObjective<Real> &alobj,
                  BoundConstraint<Real>  &bnd,
                  Constraint<Real>       &con,
                  std::ostream           &outStream = std::cout);
 
public:
 
  StabilizedLCLAlgorithm(ParameterList &list, const Ptr<Secant<Real>> &secant = nullPtr);
 
  using TypeG::Algorithm<Real>::run;
  virtual void run( Problem<Real> &problem,
                    std::ostream  &outStream = std::cout) override;
 
  virtual void run( Vector<Real>          &x,
                    const Vector<Real>    &g,
                    Objective<Real>       &obj,
                    BoundConstraint<Real> &bnd,
                    Constraint<Real>      &econ,
                    Vector<Real>          &emul,
                    const Vector<Real>    &eres,
                    std::ostream          &outStream = std::cout) override;
 
  virtual void writeHeader( std::ostream& os ) const override;
 
  virtual void writeName( std::ostream& os ) const override;
 
  virtual void writeOutput( std::ostream& os, const bool print_header = false ) const override;
 
}; // class ROL::TypeG::StabilizedLCLAlgorithm
 
} // namespace TypeG
} // namespace ROL
 
#include "ROL_TypeG_StabilizedLCLAlgorithm_Def.hpp"
 
#endif