JensenShannonKernel.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 Viktor Gal
 * Copyright (C) 2012 Viktor Gal
 */

#ifndef _JENSENSHANNONKERNEL_H___
#define _JENSENSHANNONKERNEL_H___

#include <shogun/lib/config.h>

#include <shogun/lib/common.h>
#include <shogun/kernel/DotKernel.h>
#include <shogun/features/DenseFeatures.h>

namespace shogun
{
class CJensenShannonKernel: public CDotKernel
{
    public:
        CJensenShannonKernel();

        CJensenShannonKernel(int32_t size);

        CJensenShannonKernel(
            CDenseFeatures<float64_t>* l, CDenseFeatures<float64_t>* r,
            int32_t size=10);

        virtual ~CJensenShannonKernel();

        virtual bool init(CFeatures* l, CFeatures* r);

        virtual EKernelType get_kernel_type() { return K_JENSENSHANNON; }

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

    protected:

        virtual float64_t compute(int32_t idx_a, int32_t idx_b);

};
}
#endif /* _JENSENSHANNONKERNEL_H___ */