L1PenaltyForTG.h

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/*
 * Copyright (c) The Shogun Machine Learning Toolbox
 * Written (w) 2015 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
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 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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#ifndef L1PENALTYFORTG_H
#define L1PENALTYFORTG_H
#include <shogun/optimization/L1Penalty.h>
#include <shogun/lib/SGVector.h>
namespace shogun
{
class L1PenaltyForTG: public L1Penalty
{
public:
    /* Constructor */
    L1PenaltyForTG():L1Penalty() { init(); }

    /* Destructor */
    virtual ~L1PenaltyForTG() {}

    virtual const char* get_name() const { return "L1PenaltyForTG"; }

    virtual void update_variable_for_proximity(SGVector<float64_t> variable,
        float64_t proximal_weight);

protected:
    float64_t m_u;
    SGVector<float64_t> m_q;

private:
    void init();

};

}

#endif