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RationalQuadraticKernel.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) 2011 RafaƂ Surowiecki
8  * Copyright (C) 2011 Berlin Institute of Technology and Max-Planck-Society
9  */
10 
11 #include <shogun/lib/config.h>
12 
13 #ifndef RATIONAL_QUADRATIC_KERNEL_H_
14 #define RATIONAL_QUADRATIC_KERNEL_H_
15 
16 #include <shogun/lib/common.h>
17 #include <shogun/kernel/Kernel.h>
19 
20 namespace shogun
21 {
22 
23 class CDistance;
24 
36 {
37 public:
40 
46  CRationalQuadraticKernel(int32_t cache, float64_t coef, CDistance* dist);
47 
55 
61  virtual bool init(CFeatures* l, CFeatures* r);
62 
67 
72 
77 
81  virtual const char* get_name() const { return "RationalQuadraticKernel"; }
82 
86  virtual const float64_t get_coef() const { return m_coef; }
87 
91  inline void set_coef(float64_t coef) { m_coef=coef; }
92 
93  virtual ~CRationalQuadraticKernel();
94 protected:
102  virtual float64_t compute(int32_t idx_a, int32_t idx_b);
103 
104 private:
106  void init();
107 
108 protected:
111 
114 };
115 }
116 
117 #endif /* RATIONAL_QUADRATIC_KERNEL_H_ */

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