PLearn 0.1
PartsDistanceKernel.h
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00001 // -*- C++ -*-
00002 
00003 // PartsDistanceKernel.h
00004 // Copyright (C) 2008 Pascal Vincent
00005 //
00006 // Redistribution and use in source and binary forms, with or without
00007 // modification, are permitted provided that the following conditions are met:
00008 // 
00009 //  1. Redistributions of source code must retain the above copyright
00010 //     notice, this list of conditions and the following disclaimer.
00011 // 
00012 //  2. Redistributions in binary form must reproduce the above copyright
00013 //     notice, this list of conditions and the following disclaimer in the
00014 //     documentation and/or other materials provided with the distribution.
00015 // 
00016 //  3. The name of the authors may not be used to endorse or promote
00017 //     products derived from this software without specific prior written
00018 //     permission.
00019 // 
00020 // THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
00021 // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00022 // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
00023 // NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
00024 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
00025 // TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00026 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00027 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00028 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00029 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00030 // 
00031 // This file is part of the PLearn library. For more information on the PLearn
00032 // library, go to the PLearn Web site at www.plearn.org
00033 
00037 /* *******************************************************      
00038  * $Id: PartsDistanceKernel.h 7664 2007-06-28 19:47:30Z nouiz $
00039  * This file is part of the PLearn library.
00040  ******************************************************* */
00041 
00042 #ifndef PartsDistanceKernel_INC
00043 #define PartsDistanceKernel_INC
00044 
00045 #include <plearn/ker/Kernel.h>
00046 
00047 namespace PLearn {
00048 using namespace std;
00049 
00051 class PartsDistanceKernel: public Kernel
00052 {
00053 
00054 private:
00055 
00056     typedef Kernel inherited;
00057 
00058 public:
00059 
00060     real partsize;
00061     real n;  
00062     bool standardize;
00063     real min_stddev;
00064     real epsilon;
00065     bool pow_distance;
00066 
00067     Vec inv_stddev;
00068 
00069     PartsDistanceKernel();
00070 
00071     virtual void train(VMat data);
00072     virtual real evaluate(const Vec& x1, const Vec& x2) const;
00073     
00074     PLEARN_DECLARE_OBJECT(PartsDistanceKernel);
00075 
00076 protected:
00077     mutable Vec elementdist;
00078 
00079     static void declareOptions(OptionList& ol);
00080 };
00081 
00082 DECLARE_OBJECT_PTR(PartsDistanceKernel);
00083 
00084 } // end of namespace PLearn
00085 
00086 #endif
00087 
00088 
00089 /*
00090   Local Variables:
00091   mode:c++
00092   c-basic-offset:4
00093   c-file-style:"stroustrup"
00094   c-file-offsets:((innamespace . 0)(inline-open . 0))
00095   indent-tabs-mode:nil
00096   fill-column:79
00097   End:
00098 */
00099 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :
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