ScatterSVM.h

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/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * Written (W) 2009 Soeren Sonnenburg
 * Written (W) 2009 Marius Kloft
 * Copyright (C) 2009 TU Berlin and Max-Planck-Society
 */

#ifndef _SCATTERSVM_H___
#define _SCATTERSVM_H___

#include <shogun/lib/common.h>
#include <shogun/lib/config.h>
#include <shogun/multiclass/MulticlassSVM.h>
#include <shogun/lib/external/shogun_libsvm.h>

#include <stdio.h>

namespace shogun
{
    enum SCATTER_TYPE
    {
        NO_BIAS_LIBSVM,
#ifdef USE_SVMLIGHT

        NO_BIAS_SVMLIGHT,
#endif //USE_SVMLIGHT

        TEST_RULE1,
        TEST_RULE2
    };

class CScatterSVM : public CMulticlassSVM
{
    public:
        CScatterSVM();

        CScatterSVM(SCATTER_TYPE type);

        CScatterSVM(float64_t C, CKernel* k, CLabels* lab);

        virtual ~CScatterSVM();

        virtual EMachineType get_classifier_type() { return CT_SCATTERSVM; }

        virtual float64_t apply(int32_t num);

        virtual CLabels* classify_one_vs_rest();

        virtual const char* get_name() const { return "ScatterSVM"; }

    protected:
        virtual bool train_machine(CFeatures* data=NULL);

    private:
        void compute_norm_wc();
        virtual bool train_no_bias_libsvm();
#ifdef USE_SVMLIGHT
        virtual bool train_no_bias_svmlight();
#endif //USE_SVMLIGHT
        virtual bool train_testrule12();

    protected:
        SCATTER_TYPE scatter_type;

        svm_problem problem;
        svm_parameter param;

        struct svm_model* model;

        float64_t* norm_wc;

        float64_t* norm_wcw;

        float64_t rho;

        int32_t m_num_classes;
};
}
#endif // ScatterSVM