PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // PLearn (A C++ Machine Learning Library) 00004 // Copyright (C) 1998 Pascal Vincent 00005 // Copyright (C) 1999-2002 Pascal Vincent, Yoshua Bengio, Rejean Ducharme and University of Montreal 00006 // Copyright (C) 2001-2002 Nicolas Chapados, Ichiro Takeuchi, Jean-Sebastien Senecal 00007 // Copyright (C) 2002 Xiangdong Wang, Christian Dorion 00008 00009 // Redistribution and use in source and binary forms, with or without 00010 // modification, are permitted provided that the following conditions are met: 00011 // 00012 // 1. Redistributions of source code must retain the above copyright 00013 // notice, this list of conditions and the following disclaimer. 00014 // 00015 // 2. Redistributions in binary form must reproduce the above copyright 00016 // notice, this list of conditions and the following disclaimer in the 00017 // documentation and/or other materials provided with the distribution. 00018 // 00019 // 3. The name of the authors may not be used to endorse or promote 00020 // products derived from this software without specific prior written 00021 // permission. 00022 // 00023 // THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 00024 // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00025 // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 00026 // NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00027 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 00028 // TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00029 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00030 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00031 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00032 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00033 // 00034 // This file is part of the PLearn library. For more information on the PLearn 00035 // library, go to the PLearn Web site at www.plearn.org 00036 00037 00038 /* ******************************************************* 00039 * $Id: WeightedDistance.h 3994 2005-08-25 13:35:03Z chapados $ 00040 * This file is part of the PLearn library. 00041 ******************************************************* */ 00042 00043 #ifndef WeightedDistance_INC 00044 #define WeightedDistance_INC 00045 00046 #include <plearn/ker/Kernel.h> 00047 #include <plearn/base/tostring.h> 00048 00049 namespace PLearn { 00050 using namespace std; 00051 00053 class WeightedDistance: public Kernel 00054 { 00055 00056 private: 00057 00058 typedef Kernel inherited; 00059 00060 public: 00061 00062 Vec weights; 00063 00064 WeightedDistance(); 00065 WeightedDistance(Vec the_weights); 00066 00067 PLEARN_DECLARE_OBJECT(WeightedDistance); 00068 00069 virtual string info() const 00070 { return "WL2"; } 00071 00072 virtual real evaluate(const Vec& x1, const Vec& x2) const; 00073 virtual real evaluate_i_j(int i, int j) const; 00074 00077 virtual void setDataForKernelMatrix(VMat the_data); 00078 00079 protected: 00080 static void declareOptions(OptionList& ol); 00081 }; 00082 00083 DECLARE_OBJECT_PTR(WeightedDistance); 00084 00085 } // end of namespace PLearn 00086 00087 #endif 00088 00089 00090 /* 00091 Local Variables: 00092 mode:c++ 00093 c-basic-offset:4 00094 c-file-style:"stroustrup" 00095 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00096 indent-tabs-mode:nil 00097 fill-column:79 00098 End: 00099 */ 00100 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :