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SparseEuclideanDistance.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 Soeren Sonnenburg
8  * Copyright (C) 2007-2009 Fraunhofer Institute FIRST and Max-Planck-Society
9  */
10 
11 #ifndef _SPARSEEUCLIDEANDISTANCE_H__
12 #define _SPARSEEUCLIDEANDISTANCE_H__
13 
14 #include <shogun/lib/common.h>
17 
18 namespace shogun
19 {
20  template <class T> class CSparseFeatures;
22 class CSparseEuclideanDistance: public CSparseDistance<float64_t>
23 {
24  public:
27 
35  virtual ~CSparseEuclideanDistance();
36 
43  virtual bool init(CFeatures* l, CFeatures* r);
44 
46  virtual void cleanup();
47 
53 
58  virtual EFeatureType get_feature_type() { return F_DREAL; }
59 
64  virtual const char* get_name() const { return "SparseEuclideanDistance"; }
65 
66  protected:
70  virtual float64_t compute(int32_t idx_a, int32_t idx_b);
71  /* compute_kernel*/
72 
73  private:
74  void init();
75 
76  protected:
81 
82 };
83 
84 } // namespace shogun
85 #endif /* _SPARSEEUCLIDEANDISTANCE_H__ */

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