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ScatterSVM.h
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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) 2009 Soeren Sonnenburg
00008  * Written (W) 2009 Marius Kloft
00009  * Copyright (C) 2009 TU Berlin and Max-Planck-Society
00010  */
00011 
00012 #ifndef _SCATTERSVM_H___
00013 #define _SCATTERSVM_H___
00014 
00015 #include <shogun/lib/common.h>
00016 #include <shogun/lib/config.h>
00017 #include <shogun/classifier/svm/MultiClassSVM.h>
00018 #include <shogun/classifier/svm/SVM_libsvm.h>
00019 
00020 #include <stdio.h>
00021 
00022 namespace shogun
00023 {
00025     enum SCATTER_TYPE
00026     {
00028         NO_BIAS_LIBSVM,
00029 
00031         TEST_RULE1,
00033         TEST_RULE2
00034     };
00035 
00050 class CScatterSVM : public CMultiClassSVM
00051 {
00052     public:
00054         CScatterSVM();
00055 
00057         CScatterSVM(SCATTER_TYPE type);
00058 
00065         CScatterSVM(float64_t C, CKernel* k, CLabels* lab);
00066 
00068         virtual ~CScatterSVM();
00069 
00074         virtual inline EClassifierType get_classifier_type() { return CT_SCATTERSVM; }
00075 
00081         virtual float64_t apply(int32_t num);
00082 
00087         virtual CLabels* classify_one_vs_rest();
00088 
00090         inline virtual const char* get_name() const { return "ScatterSVM"; }
00091 
00092     protected:
00101         virtual bool train_machine(CFeatures* data=NULL);
00102 
00103     private:
00104         void compute_norm_wc();
00105         virtual bool train_no_bias_libsvm();
00106 
00107         virtual bool train_testrule12();
00108 
00109     protected:
00111         SCATTER_TYPE scatter_type;
00112 
00114         svm_problem problem;
00116         svm_parameter param;
00117 
00119         struct svm_model* model;
00120 
00122         float64_t* norm_wc;
00123 
00125         float64_t* norm_wcw;
00126 
00128         float64_t rho;
00129 
00131         int32_t m_num_classes;
00132 };
00133 }
00134 #endif // ScatterSVM
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