TestStatistic.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) 2012-2013 Heiko Strathmann
 */

#ifndef __TESTSTATISTIC_H_
#define __TESTSTATISTIC_H_

#include <shogun/base/SGObject.h>

namespace shogun
{

enum EStatisticType
{
    S_LINEAR_TIME_MMD, S_QUADRATIC_TIME_MMD, S_HSIC
};

enum ENullApproximationMethod
{
    BOOTSTRAP, MMD2_SPECTRUM, MMD2_GAMMA, MMD1_GAUSSIAN, HSIC_GAMMA
};

class CTestStatistic : public CSGObject
{
    public:
        CTestStatistic();

        virtual ~CTestStatistic();

        virtual float64_t compute_statistic()=0;

        virtual float64_t compute_p_value(float64_t statistic)=0;

        virtual float64_t compute_threshold(float64_t alpha)=0;

        virtual float64_t perform_test();

        bool perform_test(float64_t alpha);

        virtual SGVector<float64_t> bootstrap_null()=0;

        virtual void set_bootstrap_iterations(index_t bootstrap_iterations);

        virtual void set_null_approximation_method(
                ENullApproximationMethod null_approximation_method);

        virtual EStatisticType get_statistic_type() const=0;

        virtual const char* get_name() const=0;

    private:
        void init();

    protected:
        index_t m_bootstrap_iterations;

        ENullApproximationMethod m_null_approximation_method;
};

}

#endif /* __TESTSTATISTIC_H_ */