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PolyKernel.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) 1999-2010 Soeren Sonnenburg
8  * Copyright (C) 1999-2009 Fraunhofer Institute FIRST and Max-Planck-Society
9  * Copyright (C) 2010 Berlin Institute of Technology
10  */
11 
12 #ifndef _POLYKERNEL_H___
13 #define _POLYKERNEL_H___
14 
15 #include <shogun/lib/common.h>
18 
19 namespace shogun
20 {
21  class CDotFeatures;
22 
36 class CPolyKernel: public CDotKernel
37 {
38  public:
40  CPolyKernel();
41 
51  int32_t d, bool inhom, int32_t size=10);
52 
59  CPolyKernel(int32_t size, int32_t degree, bool inhomogene=true);
60 
61  virtual ~CPolyKernel();
62 
69  virtual bool init(CFeatures* l, CFeatures* r);
70 
72  virtual void cleanup();
73 
78  virtual EKernelType get_kernel_type() { return K_POLY; }
79 
84  virtual const char* get_name() const { return "PolyKernel"; };
85 
86  protected:
95  virtual float64_t compute(int32_t idx_a, int32_t idx_b);
96 
97  private:
98  void init();
99 
100  protected:
102  int32_t degree;
105 };
106 }
107 #endif /* _POLYKERNEL_H__ */

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