ConstKernel.h

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00001 /*
00002  * This program is free software; you can redistribute it and/or modify
00003  * it under the terms of the GNU General Public License as published by
00004  * the Free Software Foundation; either version 3 of the License, or
00005  * (at your option) any later version.
00006  *
00007  * Written (W) 1999-2009 Soeren Sonnenburg
00008  * Copyright (C) 1999-2009 Fraunhofer Institute FIRST and Max-Planck-Society
00009  */
00010 
00011 #ifndef _CONSTKERNEL_H___
00012 #define _CONSTKERNEL_H___
00013 
00014 #include "lib/Mathematics.h"
00015 #include "lib/common.h"
00016 #include "kernel/Kernel.h"
00017 #include "features/Features.h"
00018 
00019 namespace shogun
00020 {
00027 class CConstKernel: public CKernel
00028 {
00029     public:
00034         CConstKernel(float64_t c);
00035 
00042         CConstKernel(CFeatures* l, CFeatures *r, float64_t c);
00043 
00044         virtual ~CConstKernel();
00045 
00052         virtual bool init(CFeatures* l, CFeatures* r);
00053 
00058         inline virtual EKernelType get_kernel_type() { return K_CONST; }
00059 
00064         inline virtual EFeatureType get_feature_type()
00065         {
00066             return F_ANY;
00067         }
00068 
00073         inline virtual EFeatureClass get_feature_class()
00074         {
00075             return C_ANY;
00076         }
00077 
00082         virtual const char* get_name() const { return "Const"; }
00083 
00084     protected:
00091         inline virtual float64_t compute(int32_t row, int32_t col)
00092         {
00093             return const_value;
00094         }
00095 
00096     protected:
00098         float64_t const_value;
00099 };
00100 }
00101 #endif /* _CONSTKERNEL_H__ */
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