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#ifndef _CONJUGATEMINIMIZER_H_ |
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#define _CONJUGATEMINIMIZER_H_ |
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#include "MinimizerBase.hpp" |
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#include "Minimizer.hpp" |
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class ConjugateMinimizerBase : public MinimizeBase{ |
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//abstract class of conjugate gradient minimizer |
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class ConjugateMinimizerBase : public MinimizerUsingLineSearch{ |
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public: |
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bool isSolvable(); |
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void calcDirection(vector<double>& direction) = 0; |
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ConjugateMinimizerBase(NLModel1* nlmodel, MinimizerParameterSet* param); |
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~ConjugateMinimizerBase() {} |
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bool isSolvable(); |
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virtual void minimize(); |
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virtual int checkConvergence(); |
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virtual void reset(); |
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virtual void printMinizerInfo(); |
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virtual void writeOut(vector<double>& x, double iter) {} |
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protected: |
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NLOPFirstDerive * model; |
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virtual double calcGamma(vector<double>& newGrad, vector<double>& oldGrad) = 0; |
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NLModel1 * model; |
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vector<double> prevGrad; |
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vector<double> gradient; |
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vector<double> prevDirection; |
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vector<double> direction; |
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}; |
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class FRConjugateMinimizer : public ConjugateMinimizerBase{ |
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public: |
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void calcDirection(vector<double>& direction); |
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//Fletcher-Reeves Conjugate Gradient Method |
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class FRCGMinimizer : public ConjugateMinimizerBase{ |
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public: |
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FRCGMinimizer(NLModel1* nlmodel, MinimizerParameterSet* param) :ConjugateMinimizerBase(nlmodel, param){} |
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protected: |
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double calcGamma(vector<double>& newGrad, vector<double>& oldGrad); |
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}; |
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class PRConjugateMinimizer : public ConjugateMinimizerBase{ |
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//Polak-Reeves Conjugate Gradient Method |
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class PRCGMinimizer : public ConjugateMinimizerBase{ |
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public: |
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void calcDirection(vector<double>& direction) = 0; |
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PRCGMinimizer(NLModel1* nlmodel, MinimizerParameterSet* param) :ConjugateMinimizerBase(nlmodel, param){} |
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protected: |
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double calcGamma(vector<double>& newGrad, vector<double>& oldGrad); |
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}; |
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#endif |
