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Ruben Martinez-Cantin  committed 09cbfff

Camelback example

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  • Parent commits 47f0ee0

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File matlab/testfunctions/camelback.m

+% 
+% -------------------------------------------------------------------------
+%    This file is part of BayesOpt, an efficient C++ library for 
+%    Bayesian optimization.
+%
+%    Copyright (C) 2011-2013 Ruben Martinez-Cantin <rmcantin@unizar.es>
+%
+%    BayesOpt is free software: you can redistribute it and/or modify it 
+%    under the terms of the GNU General Public License as published by
+%    the Free Software Foundation, either version 3 of the License, or
+%    (at your option) any later version.
+%
+%    BayesOpt is distributed in the hope that it will be useful, but 
+%    WITHOUT ANY WARRANTY; without even the implied warranty of
+%    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+%    GNU General Public License for more details.
+%
+%    You should have received a copy of the GNU General Public License
+%    along with BayesOpt.  If not, see <http://www.gnu.org/licenses/>.
+% ------------------------------------------------------------------------
+%
+
+function y = camelback(x)
+% -2 < x(1) < 2, -1 < x(2) < 1
+% 2 Global minima: f(x) = -1.0316 (0.0898, -0.7126), (-0.0898, 0.7126)
+    tmp1 = (4 - 2.1 * x(1)^2 + (x(1)^4)/3) * x(1)^2;
+    tmp2 = x(1)*x(2);
+    tmp3 = (-4 + 4 * x(2)^2) * x(2)^2;
+    y = tmp1 + tmp2 + tmp3;
+end