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/PolynomialRegression.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/DynMatrix.h> 00034 #include <vector> 00035 #include <string> 00036 00037 namespace icl{ 00038 00039 namespace math{ 00040 00043 00044 template<class T> 00045 struct PolynomialRegressionAttrib{ 00046 virtual T compute(const T *row) const = 0; 00047 virtual std::string toString() const = 0; 00048 }; 00052 00053 00081 template<class T> 00082 class PolynomialRegression{ 00083 00085 typedef DynMatrix<T> Matrix; 00086 00088 typedef PolynomialRegressionAttrib<T> Attrib; 00089 00090 public: 00091 00093 class Result{ 00095 friend class PolynomialRegression; 00096 00098 std::vector<const Attrib*> m_attribs; 00099 00101 std::string m_function; 00102 00104 mutable Matrix m_params; 00105 00107 mutable Matrix m_xbuf, m_resultBuf; 00108 00110 mutable int m_attribMaxIndex; 00111 00113 void setup(const std::string &function); 00114 00115 public: 00116 00118 inline Result(){} 00119 00121 Result(const std::string &xmlfilename); 00122 00124 const Matrix &getParams() const { return m_params; } 00125 00127 00137 const Matrix &operator()(const Matrix &xs) const; 00138 00140 std::vector<const Attrib*> getAttribs() const { return m_attribs; } 00141 00143 std::string toString(const std::vector<std::string> &rowLabels=std::vector<std::string> ()) const; 00144 00146 void save(const std::string &xmlFileName) const; 00147 }; 00148 00149 protected: 00150 00152 mutable Matrix m_buf; 00153 00155 Result m_result; 00156 00157 00158 public: 00159 00161 PolynomialRegression(const std::string &function); 00162 00163 00165 00176 const Result &apply(const Matrix &xs, const Matrix &ys, bool useSVD=false); 00177 00179 std::string getFunctionString() const; 00180 }; 00181 00182 } 00183 }