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HammingWordDistance.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) 2007-2009 Christian Gehl
8  * Written (W) 1999-2009 Soeren Sonnenburg
9  * Copyright (C) 1999-2009 Fraunhofer Institute FIRST and Max-Planck-Society
10  */
11 
12 #ifndef _HAMMINGWORDDISTANCE_H___
13 #define _HAMMINGWORDDISTANCE_H___
14 
15 #include <shogun/lib/config.h>
16 
17 #include <shogun/lib/common.h>
21 
22 namespace shogun
23 {
24  template <class T> class CStringFeatures;
25 
27 class CHammingWordDistance: public CStringDistance<uint16_t>
28 {
29  public:
32 
38 
46  virtual ~CHammingWordDistance();
47 
54  virtual bool init(CFeatures* l, CFeatures* r);
55 
57  virtual void cleanup();
58 
64 
69  virtual const char* get_name() const { return "HammingWordDistance"; }
70 
71  protected:
75  float64_t compute(int32_t idx_a, int32_t idx_b);
76 
77  private:
78  void init();
79 
80  protected:
82  bool use_sign;
83 };
84 } // namespace shogun
85 #endif /* _HAMMINGWORDDISTANCE_H___ */

SHOGUN Machine Learning Toolbox - Documentation