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// $Id$ |
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/* |
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Copyright (C) 2005 Peter Johansson |
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Copyright (C) 2006 Jari Häkkinen |
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Copyright (C) 2007 Peter Johansson |
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Copyright (C) 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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|
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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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|
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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 "KernelTriCube.h" |
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#include "Kernel.h" |
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#include <cmath> |
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namespace theplu { |
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namespace yat { |
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namespace regression { |
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KernelTriCube::KernelTriCube(void) |
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: Kernel() |
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{ |
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} |
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|
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double KernelTriCube::operator()(const double x) const |
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{ |
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if (x>1 || x<-1) |
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return 0.0; |
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else |
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return pow(1-pow(std::abs(x),3),3); |
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} |
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|
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}}} // of namespaces regression, yat, and theplu |