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ElitistCMASimple.cpp
Go to the documentation of this file.
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/*!
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*
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*
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* \brief Example for running CMA-ES on an exemplary benchmark function.
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*
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*
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* \author tvoss
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* \date -
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*
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*
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* \par Copyright 1995-2017 Shark Development Team
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*
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* <BR><HR>
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* This file is part of Shark.
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* <http://shark-ml.org/>
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*
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* Shark is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published
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* by the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Shark 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
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Shark. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <
shark/Algorithms/DirectSearch/ElitistCMA.h
>
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#include <
shark/ObjectiveFunctions/Benchmarks/Sphere.h
>
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int
main
(
int
argc,
char
** argv ) {
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// Adjust the floating-point format to scientific and increase output precision.
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std::cout.setf( std::ios_base::scientific );
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std::cout.precision( 10 );
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// Instantiate both the problem and the optimizer.
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shark::Sphere
sphere( 2 );
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sphere.
setNumberOfVariables
( 2 );
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shark::ElitistCMA
cma;
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// Initialize the optimizer for the objective function instance.
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sphere.
init
();
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cma.
init
( sphere );
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// Iterate the optimizer until a solution of sufficient quality is found.
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do
{
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cma.
step
( sphere );
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// Report information on the optimizer state and the current solution to the console.
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std::cout << sphere.
evaluationCounter
() <<
" "
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<< cma.
solution
().
value
<<
" "
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<< cma.
solution
().
point
<<
" "
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<< cma.
sigma
() << std::endl;
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}
while
(cma.
solution
().
value
> 1E-20 );
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}