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LogKernel.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 Jakub Jirku
8  * Copyright (C) 2007-2011 Fraunhofer Institute FIRST and Max-Planck-Society
9  */
10 
11 #include <shogun/lib/config.h>
12 
13 #ifndef LOGKERNEL_H_
14 #define LOGKERNEL_H_
15 
16 #include <shogun/lib/common.h>
17 #include <shogun/kernel/Kernel.h>
19 
20 namespace shogun
21 {
22 
23 class CDistance;
24 
35 class CLogKernel: public CKernel
36 {
37 public:
39  CLogKernel();
40 
46  CLogKernel(int32_t cache, float64_t degree, CDistance* dist);
47 
54  CLogKernel(CFeatures *l, CFeatures *r, float64_t degree, CDistance* dist);
55 
61  virtual bool init(CFeatures* l, CFeatures* r);
62 
66  virtual EKernelType get_kernel_type() { return K_POWER; }
67 
72 
77 
81  virtual const char* get_name() const { return "LogKernel"; }
82 
83  virtual ~CLogKernel();
84 
85 protected:
93  virtual float64_t compute(int32_t idx_a, int32_t idx_b);
94 
95 private:
96  void init();
97 
98 protected:
101 
104 };
105 }
106 
107 #endif /* LOGKERNEL_H_ */
virtual EFeatureClass get_feature_class()=0
EKernelType
Definition: Kernel.h:57
Class Distance, a base class for all the distances used in the Shogun toolbox.
Definition: Distance.h:87
virtual EKernelType get_kernel_type()
Definition: LogKernel.h:66
virtual ~CLogKernel()
Definition: LogKernel.cpp:38
virtual bool init(CFeatures *l, CFeatures *r)
Definition: LogKernel.cpp:44
CDistance * m_distance
distance to be used
Definition: LogKernel.h:100
float64_t m_degree
degree parameter of kernel
Definition: LogKernel.h:103
EFeatureClass
shogun feature class
Definition: FeatureTypes.h:38
virtual float64_t compute(int32_t idx_a, int32_t idx_b)
Definition: LogKernel.cpp:59
double float64_t
Definition: common.h:50
virtual const char * get_name() const
Definition: LogKernel.h:81
EFeatureType
shogun feature type
Definition: FeatureTypes.h:19
all of classes and functions are contained in the shogun namespace
Definition: class_list.h:18
The class Features is the base class of all feature objects.
Definition: Features.h:68
virtual EFeatureType get_feature_type()=0
virtual EFeatureClass get_feature_class()
Definition: LogKernel.h:76
The Kernel base class.
Definition: Kernel.h:159
Log kernel.
Definition: LogKernel.h:35
virtual EFeatureType get_feature_type()
Definition: LogKernel.h:71

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