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#define _MINIMIZER_H_ |
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#include "MinimizerBase.hpp" |
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#include "Minimizer1D.hpp" |
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typedef enum {GoldenSection, Brent} LineSearchStrategy; |
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class Minimizer : public MinimizerBase{ |
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public: |
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Minimizer(MinimizerParameterSet* param) : paramSet(param), outputFunc(NULL) {} |
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virtual void printMinizerInfo() = 0; |
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void init() {} |
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virtual MinimizerParameterSet* creatParameterSet() = 0; |
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void setOutputFunctor(OutputFunctor* functor) {outputFunc = functor;} |
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virtual void writeOut(vector<double>& x, int iter){ |
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if (outputFunc !=NULL) |
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(*outputFunc)(x, iter); |
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} |
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void setMinX(vector<double>& x) { minX = x;} |
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vector<double> getMinX() { return minX;} |
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protected: |
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MinimizerParameterSet* paramSet; |
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OutputFunctor* outputFunc; |
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int currentIter; |
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// Coordinates yielding the minimum value of the function. |
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class MinimizerUsingLineSearch : public Minimizer{ |
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public: |
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void setLineSearchStrategy(); |
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MinimizerUsingLineSearch(MinimizerParameterSet* param) : Minimizer(param), lineSearchInit(false){} |
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void setLineSearchStrategy(NLModel* nlp, LineSearchStrategy stategy){ |
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if(stategy == GoldenSection) |
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lsMinimizer = new GoldenSectionMinimizer(nlp); |
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else if(stategy == Brent) |
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lsMinimizer = new BrentMinimizer(nlp); |
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else{ |
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cerr << "MinimizerUsingLineSearch Error : Unknown Line Search Strategy" << endl; |
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exit(-1); |
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} |
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lsMinimizer->setMaxIteration(paramSet->getLineSearchMaxIteration()); |
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lsMinimizer->setStepTol(paramSet->getLineSearchTol()); |
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lineSearchInit = true; |
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} |
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protected: |
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Minimizer1D* lsMinimizer; |
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bool lineSearchInit; |
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}; |
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#endif |
