ConstMean.h

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/*
 * Copyright (c) The Shogun Machine Learning Toolbox
 * Written (w) 2014 Wu Lin
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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 * either expressed or implied, of the Shogun Development Team.
 *
 * Adapted from the GPML toolbox, specifically meanConst.m
 * http://www.gaussianprocess.org/gpml/code/matlab/doc/
 */

#ifndef CCONSTMEAN_H_
#define CCONSTMEAN_H_

#include <shogun/lib/config.h>

#include <shogun/machine/gp/MeanFunction.h>

namespace shogun
{

class CConstMean : public CMeanFunction
{
public:
    CConstMean();

    CConstMean(float64_t mean);

    virtual ~CConstMean();

    virtual void set_const(float64_t mean) {m_mean=mean;}

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

    virtual SGVector<float64_t> get_mean_vector(const CFeatures* features) const;

    virtual SGVector<float64_t> get_parameter_derivative(const CFeatures* features,
            const TParameter* param, index_t index=-1);
private:

    void init();

    float64_t m_mean;
};
}
#endif /* CCONSTMEAN_H_ */