GaussianShortRealKernel.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) 2008-2009 Soeren Sonnenburg
00008  * Copyright (C) 2008-2009 Fraunhofer Institute FIRST and Max-Planck-Society
00009  */
00010 
00011 #ifndef _GAUSSIANSHORTREALKERNEL_H___
00012 #define _GAUSSIANSHORTREALKERNEL_H___
00013 
00014 #include <shogun/lib/common.h>
00015 #include <shogun/kernel/DotKernel.h>
00016 #include <shogun/features/SimpleFeatures.h>
00017 
00018 namespace shogun
00019 {
00031 class CGaussianShortRealKernel: public CDotKernel
00032 {
00033     public:
00035         CGaussianShortRealKernel();
00036 
00042         CGaussianShortRealKernel(int32_t size, float64_t width);
00043 
00051         CGaussianShortRealKernel(CSimpleFeatures<float32_t>* l, CSimpleFeatures<float32_t>* r,
00052             float64_t width, int32_t size=10);
00053 
00054         virtual ~CGaussianShortRealKernel();
00055 
00062         virtual bool init(CFeatures* l, CFeatures* r);
00063 
00068         virtual EKernelType get_kernel_type() { return K_GAUSSIAN; }
00069 
00074         virtual const char* get_name() const { return "GaussianShortRealKernel"; }
00077         virtual void register_params();
00078 
00079     protected:
00088         virtual float64_t compute(int32_t idx_a, int32_t idx_b);
00089 
00090     protected:
00092         float64_t width;
00093 };
00094 }
00095 #endif /* _GAUSSIANSHORTREALKERNEL_H__ */
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