00001 #ifndef _theplu_yat_classifier_gaussian_kernel_function_ 00002 #define _theplu_yat_classifier_gaussian_kernel_function_ 00003 00004 // $Id: GaussianKernelFunction.h 2119 2009-12-12 23:11:43Z peter $ 00005 00006 /* 00007 Copyright (C) 2004, 2005, 2006, 2007, 2008 Jari Häkkinen, Peter Johansson 00008 00009 This file is part of the yat library, http://dev.thep.lu.se/yat 00010 00011 The yat library is free software; you can redistribute it and/or 00012 modify it under the terms of the GNU General Public License as 00013 published by the Free Software Foundation; either version 3 of the 00014 License, or (at your option) any later version. 00015 00016 The yat library is distributed in the hope that it will be useful, 00017 but WITHOUT ANY WARRANTY; without even the implied warranty of 00018 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00019 General Public License for more details. 00020 00021 You should have received a copy of the GNU General Public License 00022 along with yat. If not, see <http://www.gnu.org/licenses/>. 00023 */ 00024 00025 #include "KernelFunction.h" 00026 00027 #include <cmath> 00028 00029 namespace theplu { 00030 namespace yat { 00031 namespace classifier { 00032 00033 class DataLookup1D; 00034 00038 00039 class GaussianKernelFunction : public KernelFunction 00040 { 00041 00042 public: 00047 GaussianKernelFunction(double = 1); 00048 00052 virtual ~GaussianKernelFunction(void) {}; 00053 00058 double operator()(const DataLookup1D& x, 00059 const DataLookup1D& y) const; 00060 00065 double operator()(const DataLookup1D& x, 00066 const DataLookupWeighted1D& y) const; 00067 00072 double operator()(const DataLookupWeighted1D& x, 00073 const DataLookupWeighted1D& y) const; 00074 00075 private: 00076 double sigma2_; 00077 00078 }; // class GaussianKernelFunction 00079 00080 }}} // of namespace classifier, yat, and theplu 00081 00082 #endif