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Abstract base class for wrapping an estimator and a sampler as an eoTransform

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Johann Dreo 2013-06-13 14:44:02 +02:00
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/*
The Evolving Distribution Objects framework (EDO) is a template-based,
ANSI-C++ evolutionary computation library which helps you to write your
own estimation of distribution algorithms.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Copyright (C) 2013 Thales group
*/
/*
Authors:
Johann Dréo <johann.dreo@thalesgroup.com>
*/
#ifndef _edoTransform_h
#define _edoTransform_h
#include <eo> // eoTransform
/** @defgroup Wrappers
*
* Wrappers to interact with other parts of the framework
*/
/** Abstract base class for wrapping an estimator and a sampler as an eoTransform
*
* @ingroup Wrappers
*/
template<class D>
class edoTransform : public eoTransform< eoPop<typename D::EOType>& >
{
public:
typedef typename D::EOType EOType;
edoTransform( edoEstimator<D> & estimator, edoSampler<D> & sampler ) :
_estimator(estimator), _sampler(sampler)
{}
virtual void operator()( eoPop<EOType> & pop ) = 0;
protected:
edoEstimator<D> & _estimator;
edoSampler<D> & _sampler;
};
/** Wrapping an estimator and a sampler as an eoTransform.
*
* @ingroup Wrappers
*/
template<typename D>
class edoTransformAdaptive : public edoTransform<D>
{
public:
typedef typename D::EOType EOType;
edoTransformAdaptive( D & distrib, edoEstimator<D> & estimator, edoSampler<D> & sampler )
: _distrib(distrib), _estimator(estimator), _sampler(sampler)
{}
virtual void operator()( eoPop<EOType> & pop )
{
_distrib = _estimator( pop );
pop.clear();
for( unsigned int i = 0; i < pop.size(); ++i ) {
pop.push_back( _sampler(_distrib) );
}
}
protected:
D & _distrib;
edoEstimator<D> & _estimator;
edoSampler<D> & _sampler;
};
/** Wrapping an estimator and a sampler as an eoTransform,
* the distribution is created at instanciation and replaced at each call.
*
* @ingroup Wrappers
*/
template<typename D>
class edoTransformStateless : public edoTransformAdaptive<D>
{
public:
typedef typename D::EOType EOType;
edoTransformStateless( edoEstimator<D> & estimator, edoSampler<D> & sampler )
: edoTransformAdaptive<D>( *(new D), estimator, sampler )
{}
~edoTransformStateless()
{
// delete the temporary distrib allocated in constructor
delete &(this->_distrib);
}
};
#endif // !_edoTransform_h