00001 /* 00002 * This program is free software; you can redistribute it and/or modify 00003 * it under the terms of the GNU General Public License as published by 00004 * the Free Software Foundation; either version 3 of the License, or 00005 * (at your option) any later version. 00006 * 00007 * Written (W) 1999-2009 Soeren Sonnenburg 00008 * Copyright (C) 1999-2009 Fraunhofer Institute FIRST and Max-Planck-Society 00009 */ 00010 00011 #ifndef _LDA_H___ 00012 #define _LDA_H___ 00013 00014 #include "lib/config.h" 00015 00016 #ifdef HAVE_LAPACK 00017 #include "lib/common.h" 00018 #include "features/Features.h" 00019 #include "features/SimpleFeatures.h" 00020 #include "classifier/LinearClassifier.h" 00021 00049 class CLDA : public CLinearClassifier 00050 { 00051 public: 00056 CLDA(float64_t gamma=0); 00057 00064 CLDA(float64_t gamma, CSimpleFeatures<float64_t>* traindat, CLabels* trainlab); 00065 virtual ~CLDA(); 00066 00071 inline void set_gamma(float64_t gamma) 00072 { 00073 m_gamma=gamma; 00074 } 00075 00080 inline float64_t get_gamma() 00081 { 00082 return m_gamma; 00083 } 00084 00089 virtual bool train(); 00090 00095 inline virtual EClassifierType get_classifier_type() 00096 { 00097 return CT_LDA; 00098 } 00099 00104 virtual inline void set_features(CDotFeatures* feat) 00105 { 00106 if (feat->get_feature_class() != C_SIMPLE || 00107 feat->get_feature_type() != F_DREAL) 00108 SG_ERROR("LDA requires SIMPLE REAL valued features\n"); 00109 00110 CLinearClassifier::set_features(feat); 00111 } 00112 00114 inline virtual const char* get_name() const { return "LDA"; } 00115 00116 protected: 00118 float64_t m_gamma; 00119 }; 00120 #endif 00121 #endif