MulticlassAccuracy.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) 2011 Sergey Lisitsyn
 * Copyright (C) 2011 Berlin Institute of Technology and Max-Planck-Society
 */

#ifndef MULTICLASSACCURACY_H_
#define MULTICLASSACCURACY_H_

#include <shogun/evaluation/Evaluation.h>
#include <shogun/labels/Labels.h>

namespace shogun
{

class CLabels;

class CMulticlassAccuracy: public CEvaluation
{
public:
    CMulticlassAccuracy() :
        CEvaluation(), m_ignore_rejects(false), m_rejects_num(0) {};

    CMulticlassAccuracy(bool ignore_rejects) :
        CEvaluation(), m_ignore_rejects(ignore_rejects), m_rejects_num(0) {};

    virtual ~CMulticlassAccuracy() {};

    virtual float64_t evaluate(CLabels* predicted, CLabels* ground_truth);

    static SGMatrix<int32_t> get_confusion_matrix(CLabels* predicted, CLabels* ground_truth);

    inline EEvaluationDirection get_evaluation_direction()
    {
        return ED_MAXIMIZE;
    }

    int32_t get_rejects_num() const
    {
        return m_rejects_num;
    }

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

protected:

    bool m_ignore_rejects;

    int32_t m_rejects_num;
};

}

#endif /* MULTICLASSACCURACY_H_ */