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) 2007-2009 Soeren Sonnenburg 00008 * Copyright (C) 2007-2009 Fraunhofer Institute FIRST and Max-Planck-Society 00009 */ 00010 00011 #ifndef _LPM_H___ 00012 #define _LPM_H___ 00013 00014 #include <shogun/lib/config.h> 00015 #ifdef USE_CPLEX 00016 00017 #include <stdio.h> 00018 #include <shogun/lib/common.h> 00019 #include <shogun/features/Features.h> 00020 #include <shogun/machine/LinearMachine.h> 00021 00022 namespace shogun 00023 { 00043 class CLPM : public CLinearMachine 00044 { 00045 public: 00046 MACHINE_PROBLEM_TYPE(PT_BINARY); 00047 00048 CLPM(); 00049 virtual ~CLPM(); 00050 00051 virtual EMachineType get_classifier_type() 00052 { 00053 return CT_LPM; 00054 } 00055 00060 virtual void set_features(CDotFeatures* feat) 00061 { 00062 if (feat->get_feature_class() != C_SPARSE || 00063 feat->get_feature_type() != F_DREAL) 00064 SG_ERROR("LPM requires SPARSE REAL valued features\n"); 00065 00066 CLinearMachine::set_features(feat); 00067 } 00068 00075 inline void set_C(float64_t c_neg, float64_t c_pos) { C1=c_neg; C2=c_pos; } 00076 00077 inline float64_t get_C1() { return C1; } 00078 inline float64_t get_C2() { return C2; } 00079 00080 inline void set_bias_enabled(bool enable_bias) { use_bias=enable_bias; } 00081 inline bool get_bias_enabled() { return use_bias; } 00082 00083 inline void set_epsilon(float64_t eps) { epsilon=eps; } 00084 inline float64_t get_epsilon() { return epsilon; } 00085 00087 virtual const char* get_name() const { return "LPM"; } 00088 00089 protected: 00098 virtual bool train_machine(CFeatures* data=NULL); 00099 00100 protected: 00101 float64_t C1; 00102 float64_t C2; 00103 bool use_bias; 00104 float64_t epsilon; 00105 }; 00106 } 00107 #endif //USE_CPLEX 00108 #endif //_LPM_H___