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EuclideanDistance.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 _EUCLIDEANDISTANCE_H__
12 #define _EUCLIDEANDISTANCE_H__
13 
14 #include <shogun/lib/config.h>
15 
16 #include <shogun/lib/common.h>
19 
20 namespace shogun
21 {
46 {
47  public:
50 
57  virtual ~CEuclideanDistance();
58 
65  virtual bool init(CFeatures* l, CFeatures* r);
66 
68  virtual void cleanup();
69 
75 
80  virtual EFeatureType get_feature_type() { return F_DREAL; }
81 
86  virtual const char* get_name() const { return "EuclideanDistance"; }
87 
93  virtual bool get_disable_sqrt() { return disable_sqrt; };
94 
100  virtual void set_disable_sqrt(bool state) { disable_sqrt=state; };
101 
114  virtual float64_t distance_upper_bounded(int32_t idx_a, int32_t idx_b, float64_t upper_bound);
115 
116  protected:
120  virtual float64_t compute(int32_t idx_a, int32_t idx_b);
121 
122  private:
123  void init();
124 
125  protected:
128 };
129 
130 } // namespace shogun
131 #endif /* _EUCLIDEANDISTANCE_H__ */

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