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ECOCAEDDecoder.h
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1 /*
2  * This program is free software; you can redistribute it and/or modify
3  * it under the terms of the GNU General Public License as published by
4  * the Free Software Foundation; either version 3 of the License, or
5  * (at your option) any later version.
6  *
7  * Written (W) 2012 Chiyuan Zhang
8  * Copyright (C) 2012 Chiyuan Zhang
9  */
10 
11 #ifndef ECOCAEDDECODER_H__
12 #define ECOCAEDDECODER_H__
13 
14 
17 
18 namespace shogun
19 {
20 
28 {
29 public:
32 
34  virtual ~CECOCAEDDecoder() {}
35 
37  virtual const char* get_name() const { return "ECOCAEDDecoder"; }
38 
39 
40 protected:
42  virtual bool binary_decoding()
43  {
44  return false;
45  }
46 
48  virtual float64_t compute_distance(SGVector<float64_t> outputs, const int32_t *code)
49  {
50  float64_t dist = 0;
51  for (int32_t i=0; i < outputs.vlen; ++i)
52  dist += (outputs[i]-code[i])*(outputs[i]-code[i]) * CMath::abs(code[i]);
53  return CMath::sqrt(dist);
54  }
55 };
56 
57 } /* shogun */
58 
59 
60 #endif /* end of include guard: ECOCAEDDECODER_H__ */
virtual const char * get_name() const
double float64_t
Definition: common.h:48
virtual float64_t compute_distance(SGVector< float64_t > outputs, const int32_t *code)
virtual bool binary_decoding()
static float32_t sqrt(float32_t x)
x^0.5
Definition: Math.h:245
index_t vlen
Definition: SGVector.h:706
static T abs(T a)
return the absolute value of a number
Definition: Math.h:179

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