GaussianKernel.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) 1999-2008 Soeren Sonnenburg
00008  * Copyright (C) 1999-2008 Fraunhofer Institute FIRST and Max-Planck-Society
00009  */
00010 
00011 #ifndef _GAUSSIANKERNEL_H___
00012 #define _GAUSSIANKERNEL_H___
00013 
00014 #include "lib/common.h"
00015 #include "kernel/SimpleKernel.h"
00016 #include "features/RealFeatures.h"
00017 
00027 class CGaussianKernel: public CSimpleKernel<float64_t>
00028 {
00029     public:
00035         CGaussianKernel(int32_t size, float64_t width);
00036 
00044         CGaussianKernel(CRealFeatures* l, CRealFeatures* r,
00045             float64_t width, int32_t size=10);
00046 
00047         virtual ~CGaussianKernel();
00048 
00055         virtual bool init(CFeatures* l, CFeatures* r);
00056 
00062         virtual bool load_init(FILE* src);
00063 
00069         virtual bool save_init(FILE* dest);
00070 
00075         virtual EKernelType get_kernel_type() { return K_GAUSSIAN; }
00076 
00081         virtual const char* get_name() { return "Gaussian"; }
00082 
00083     protected:
00092         virtual float64_t compute(int32_t idx_a, int32_t idx_b);
00093 
00094     protected:
00096         float64_t width;
00097 };
00098 
00099 #endif /* _GAUSSIANKERNEL_H__ */

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