Image Component Library (ICL)
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00001 /******************************************************************** 00002 ** Image Component Library (ICL) ** 00003 ** ** 00004 ** Copyright (C) 2006-2013 CITEC, University of Bielefeld ** 00005 ** Neuroinformatics Group ** 00006 ** Website: www.iclcv.org and ** 00007 ** http://opensource.cit-ec.de/projects/icl ** 00008 ** ** 00009 ** File : ICLMath/src/ICLMath/SimplexOptimizer.h ** 00010 ** Module : ICLMath ** 00011 ** Authors: Christof Elbrechter ** 00012 ** ** 00013 ** ** 00014 ** GNU LESSER GENERAL PUBLIC LICENSE ** 00015 ** This file may be used under the terms of the GNU Lesser General ** 00016 ** Public License version 3.0 as published by the ** 00017 ** ** 00018 ** Free Software Foundation and appearing in the file LICENSE.GPL ** 00019 ** included in the packaging of this file. Please review the ** 00020 ** following information to ensure the license requirements will ** 00021 ** be met: http://www.gnu.org/licenses/lgpl-3.0.txt ** 00022 ** ** 00023 ** The development of this software was supported by the ** 00024 ** Excellence Cluster EXC 277 Cognitive Interaction Technology. ** 00025 ** The Excellence Cluster EXC 277 is a grant of the Deutsche ** 00026 ** Forschungsgemeinschaft (DFG) in the context of the German ** 00027 ** Excellence Initiative. ** 00028 ** ** 00029 ********************************************************************/ 00030 00031 #pragma once 00032 00033 #include <ICLMath/DynVector.h> 00034 #include <ICLMath/FixedVector.h> 00035 #include <ICLUtils/Function.h> 00036 #include <ICLUtils/Uncopyable.h> 00037 00038 namespace icl{ 00039 namespace math{ 00040 00042 template<class T, class Vector=DynColVector<T> > 00043 struct SimplexOptimizationResult{ 00044 const Vector &x; 00045 const T fx; 00046 const int iterations; 00047 const std::vector<Vector> &vertices; 00048 }; 00049 00050 00052 00143 template<class T, class Vector=DynColVector<T> > 00144 class SimplexOptimizer : public utils::Uncopyable{ 00145 struct Data; 00146 Data *m_data; 00147 00148 public: 00150 typedef utils::Function<T, const Vector&> error_function; 00151 typedef SimplexOptimizationResult<T,Vector> Result; 00152 typedef utils::Function<void,const Result &> iteration_callback; 00153 00154 00156 00167 SimplexOptimizer(error_function f, int dim, 00168 int iterations=1E5, T minError=1.0E-10, 00169 T minDelta=1.0E-10, 00170 T a=1.0, T b=1.0, T g=0.5, T h=0.5); 00171 00173 void setDim(int dim); 00174 00176 void setA(T a); 00177 00179 void setB(T b); 00180 00182 void setG(T g); 00183 00185 void setH(T h); 00186 00188 void setIterations(int iterations); 00189 00191 void setMinError(T minError); 00192 00194 void setMinDelta(T minDelta); 00195 00197 void setErrorFunction(error_function f); 00198 00200 int getDim() const; 00201 00203 T getA() const; 00204 00206 T getB() const; 00207 00209 T getG() const; 00210 00212 T getH() const; 00213 00215 int getIterations() const; 00216 00218 T getMinError() const; 00219 00221 T getMinDelta() const; 00222 00224 error_function getErrorFunction() const; 00225 00227 void setIterationCallback(const iteration_callback &cb); 00228 00230 00233 Result optimize(const Vector &init); 00234 00236 00237 Result optimize(const std::vector<Vector> &init); 00238 00240 00242 static std::vector<Vector> createDefaultSimplex(const Vector &init); 00243 }; 00244 } // namespace math 00245 } 00246 00247