MyRandomCARTree.h

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/*
 * Copyright (c) The Shogun Machine Learning Toolbox
 * Written (w) 2014 Parijat Mazumdar
 * 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
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 * The views and conclusions contained in the software and documentation are those
 * of the authors and should not be interpreted as representing official policies,
 * either expressed or implied, of the Shogun Development Team.
 */
 
 
#ifndef _RANDOMCARTREE_H__
#define _RANDOMCARTREE_H__
 
#include <shogun/lib/config.h>
 
#include <shogun/multiclass/tree/TreeMachine.h>
#include "MyCARTree.h"
 
namespace shogun
{
 
class CMyRandomCARTree : public CMyCARTree
{
public:
    CMyRandomCARTree();
 
    virtual ~CMyRandomCARTree();
 
    virtual const char* get_name() const { return "MyRandomCARTree"; }
 
    void set_feature_subset_size(index_t size);
 
    index_t get_feature_subset_size() const { return m_randsubset_size; }
    
    CMyRandomCARTree* clone();
 
protected:
    virtual index_t compute_best_attribute(const SGMatrix<float64_t>& mat, const SGVector<float64_t>& weights, CDenseLabels* labels,
        SGVector<float64_t>& left, SGVector<float64_t>& right, SGVector<bool>& is_left_final, index_t &num_missing,
        index_t &count_left, index_t &count_right, float64_t& IG, index_t subset_size=0, const SGVector<index_t>& active_indices=SGVector<index_t>());
 
private:
    void init();
 
private:
    index_t m_randsubset_size;
 
};
} /* namespace shogun */
 
#endif /* _RANDOMCARTREE_H__ */