lbfgs_optimizers.h

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#ifndef GEOGRAM_NUMERICS_LBFGS_OPTIMIZERS
#define GEOGRAM_NUMERICS_LBFGS_OPTIMIZERS
 
#ifdef GEOGRAM_WITH_HLBFGS
 
#include <geogram/basic/common.h>
#include <geogram/numerics/optimizer.h>
#include <geogram/basic/assert.h>
 
namespace GEO {
 
    class GEOGRAM_API HLBFGSOptimizer : public Optimizer {
    public:
        HLBFGSOptimizer();
 
        void optimize(double* x) override;
 
        void set_m1qn3(bool m1qn3) {
            b_m1qn3_ = m1qn3;
        }
 
        void set_cg(bool cg) {
            b_cg_ = cg;
        }
 
    protected:
        ~HLBFGSOptimizer() override;
 
    protected:
        bool b_m1qn3_;
        bool b_cg_;
    };
 
    /************************************************************************/
 
    class HLBFGS_M1QN3Optimizer : public HLBFGSOptimizer {
    public:
        /*
         * \brief Optimizer constructor
         * \details This sets the M1QN3 parameter to true
         * \see set_m1qn3()
         */
        HLBFGS_M1QN3Optimizer();
 
    protected:
        /*
         * \brief HLBFGS_M1QN3Optimizer destructor
         */
        ~HLBFGS_M1QN3Optimizer() override;
    };
 
    /************************************************************************/
 
    class HLBFGS_CGOptimizer : public HLBFGSOptimizer {
    public:
        /*
         * \brief Optimizer constructor
         * \details This sets the CG parameter to true
         * \see set_cg()
         */
        HLBFGS_CGOptimizer();
 
    protected:
        /*
         * \brief HLBFGS_CGOptimizer destructor
         */
        ~HLBFGS_CGOptimizer() override;
    };
 
    /************************************************************************/
 
    class GEOGRAM_API HLBFGS_HessOptimizer : public HLBFGSOptimizer {
    public:
        HLBFGS_HessOptimizer();
 
        void optimize(double* x) override;
 
        void set_T(index_t T) {
            T_ = T;
        }
 
    protected:
        ~HLBFGS_HessOptimizer() override;
 
    protected:
        index_t T_;
    };
}
 
#endif
 
#endif