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NeuralConvolutionalLayer.h
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1 /*
2  * Copyright (c) 2014, Shogun Toolbox Foundation
3  * All rights reserved.
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5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions are met:
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8  * 1. Redistributions of source code must retain the above copyright notice,
9  * this list of conditions and the following disclaimer.
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11  * 2. Redistributions in binary form must reproduce the above copyright notice,
12  * this list of conditions and the following disclaimer in the documentation
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17  * software without specific prior written permission.
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19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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31  * Written (W) 2014 Khaled Nasr
32  */
33 
34 #ifndef __NEURALCONVOLUTIONALLAYER_H__
35 #define __NEURALCONVOLUTIONALLAYER_H__
36 
37 #include <shogun/lib/common.h>
40 
41 namespace shogun
42 {
60 {
61 public:
64 
86  int32_t num_maps,
87  int32_t radius_x, int32_t radius_y,
88  int32_t pooling_width=1, int32_t pooling_height=1,
89  int32_t stride_x=1, int32_t stride_y=1);
90 
92 
100  virtual void set_batch_size(int32_t batch_size);
101 
111  virtual void initialize(CDynamicObjectArray* layers,
112  SGVector<int32_t> input_indices);
113 
128  virtual void initialize_parameters(SGVector<float64_t> parameters,
129  SGVector<bool> parameter_regularizable,
130  float64_t sigma);
131 
141  virtual void compute_activations(SGVector<float64_t> parameters,
142  CDynamicObjectArray* layers);
143 
169  virtual void compute_gradients(SGVector<float64_t> parameters,
170  SGMatrix<float64_t> targets,
171  CDynamicObjectArray* layers,
172  SGVector<float64_t> parameter_gradients);
173 
181 
190  virtual void enforce_max_norm(SGVector<float64_t> parameters,
191  float64_t max_norm);
192 
193  virtual const char* get_name() const { return "NeuralConvolutionalLayer"; }
194 
195 private:
196  void init();
197 
198 protected:
200  int32_t m_num_maps;
201 
203  int32_t m_input_width;
204 
206  int32_t m_input_height;
207 
210 
212  int32_t m_radius_x;
213 
215  int32_t m_radius_y;
216 
219 
222 
224  int32_t m_stride_x;
225 
227  int32_t m_stride_y;
228 
231 
234 
237 
240 };
241 
242 }
243 #endif

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