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// $Id$ |
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/* |
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Copyright (C) 2005, 2006, 2007, 2008 Jari Häkkinen, Peter Johansson |
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Copyright (C) 2012 Peter Johansson |
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This file is part of the yat library, http://dev.thep.lu.se/yat |
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The yat library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU General Public License as |
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published by the Free Software Foundation; either version 3 of the |
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License, or (at your option) any later version. |
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The yat library is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with yat. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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#include <config.h> |
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#include "Kernel_SEV.h" |
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#include "DataLookup1D.h" |
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#include "DataLookupWeighted1D.h" |
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#include "Kernel.h" |
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#include "KernelFunction.h" |
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#include "MatrixLookup.h" |
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#include "yat/utility/Matrix.h" |
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namespace theplu { |
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namespace yat { |
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namespace classifier { |
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Kernel_SEV::Kernel_SEV(const MatrixLookup& data, const KernelFunction& kf, |
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const bool own) |
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: Kernel(data,kf, own) |
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{ |
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build_kernel(); |
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} |
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Kernel_SEV::Kernel_SEV(const MatrixLookupWeighted& data, |
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const KernelFunction& kf, const bool own) |
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: Kernel(data,kf, own) |
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{ |
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kernel_matrix_.resize(data.columns(),data.columns()); |
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for (size_t i=0; i<kernel_matrix_.rows(); i++) |
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for (size_t j=i; j<kernel_matrix_.columns(); j++) |
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kernel_matrix_(i,j) = kernel_matrix_(j,i) = |
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(*kf_)(DataLookupWeighted1D(data,i,false), |
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DataLookupWeighted1D(data,j,false)); |
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} |
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Kernel_SEV::Kernel_SEV(const Kernel_SEV& other, |
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const std::vector<size_t>& index) |
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: Kernel(other, index) |
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{ |
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build_kernel(); |
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} |
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|
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void Kernel_SEV::build_kernel(void) |
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{ |
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kernel_matrix_.resize(size(),size()); |
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for (size_t i=0; i<kernel_matrix_.rows(); i++) |
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for (size_t j=i; j<kernel_matrix_.columns(); j++) |
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kernel_matrix_(i,j) = kernel_matrix_(j,i) = |
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(*kf_)(DataLookup1D(*ml_,i,false), |
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DataLookup1D(*ml_,j,false)); |
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} |
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double Kernel_SEV::operator()(const size_t row,const size_t column) const |
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{ |
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return kernel_matrix_(row,column); |
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} |
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const Kernel_SEV* Kernel_SEV::make_kernel(const MatrixLookup& data, |
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const bool own) const |
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{ |
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return new Kernel_SEV(data, *kf_, own); |
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} |
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const Kernel_SEV* Kernel_SEV::make_kernel(const MatrixLookupWeighted& data, |
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const bool own) const |
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{ |
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return new Kernel_SEV(data, *kf_, own); |
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} |
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}}} // of namespace classifier, yat, and theplu |