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DeepAutoencoder.h
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1 /*
2  * Copyright (c) 2014, Shogun Toolbox Foundation
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions are met:
7 
8  * 1. Redistributions of source code must retain the above copyright notice,
9  * this list of conditions and the following disclaimer.
10  *
11  * 2. Redistributions in binary form must reproduce the above copyright notice,
12  * this list of conditions and the following disclaimer in the documentation
13  * and/or other materials provided with the distribution.
14  *
15  * 3. Neither the name of the copyright holder nor the names of its
16  * contributors may be used to endorse or promote products derived from this
17  * software without specific prior written permission.
18 
19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
20  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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23  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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30  *
31  * Written (W) 2014 Khaled Nasr
32  */
33 
34 #ifndef __DEEPAUTOENCODER_H__
35 #define __DEEPAUTOENCODER_H__
36 
37 #include <shogun/lib/common.h>
39 
40 namespace shogun
41 {
42 template <class T> class CDenseFeatures;
43 
88 {
89 public:
92 
100  CDeepAutoencoder(CDynamicObjectArray* layers, float64_t sigma = 0.01);
101 
102  virtual ~CDeepAutoencoder() {}
103 
124  virtual void pre_train(CFeatures* data);
125 
135 
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157  CNeuralLayer* output_layer=NULL, float64_t sigma = 0.01);
158 
170  virtual void set_contraction_coefficient(float64_t coeff);
171 
172  virtual const char* get_name() const { return "DeepAutoencoder"; }
173 
174 protected:
182 
183 private:
184  void init();
185 
187  template<class T>
188  SGVector<T> get_section(SGVector<T> v, int32_t i);
189 
190 public:
195 
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257 protected:
261 };
262 }
263 #endif

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