Implemented a real neighborhood for mo

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LPTK 2013-07-19 15:31:01 +02:00
commit 6635dc9ee6
2 changed files with 165 additions and 0 deletions

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#ifndef __moRealNeighbor_h__
#define __moRealNeighbor_h__
#include <mo>
#include <eo>
#include <edo>
//! A neighbor as produced by a moRealNeighborhood
/*!
* In a real neighborhood, the move is just a translation vector, of the same type than a solution.
*/
template <class EOT, class Fitness=typename EOT::Fitness>
class moRealNeighbor : public moNeighbor<EOT, Fitness>
{
protected:
//! The move to be applied
EOT _translation;
edoBounder<EOT> * _bounder;
public:
moRealNeighbor<EOT,Fitness>() : _bounder( NULL ) { }
//! Returns the solution attached to this neighbor
EOT translation() { return _translation; }
//! Set the translation
void translation( EOT translation ) { _translation = translation; }
void bounder( edoBounder<EOT> * bounder ) { _bounder = bounder; }
/**
* Assignment operator
* @param _neighbor the neighbor to assign
* @return a neighbor equal to the other
*/
virtual moNeighbor<EOT, Fitness>& operator=(const moNeighbor<EOT, Fitness>& _neighbor) {
fitness( _neighbor.fitness() );
return (*this);
}
/*!
* Move a solution to the solution of this neighbor
* @param _solution the related solution
*/
virtual void move(EOT & _solution)
{
assert( _solution.size() == _translation.size() );
for( unsigned int i=0, size= _solution.size(); i<size; ++i ) {
_solution[i] += _translation[i];
}
if( _bounder != NULL ) {
(*_bounder)( _solution );
}
_solution.invalidate();
}
/**
* Test equality between two neighbors
* @param _neighbor a neighbor
* @return if _neighbor and this one are equals
*/
virtual bool equals(moRealNeighbor<EOT>& _neighbor) {
return _neighbor.translation() == _translation;
}
/**
* Return the class Name
* @return the class name as a std::string
*/
virtual std::string className() const {
return "moRealNeighbor";
}
};
#endif // __moRealNeighbor_h__

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#ifndef __moRealNeighborhood_h__
#define __moRealNeighborhood_h__
#include <mo>
#include <eoFunctor.h> // FIXME: Why don't we use eoFunctorBase on the mother classes
#include "moRealNeighbor.h"
template<class Distrib, class Neighbor>
class moRealNeighborhood : public moRndNeighborhood< Neighbor >, public eoFunctorBase
{
public:
typedef typename Distrib::EOType EOT;
protected:
Distrib & _distrib;
edoSampler<Distrib> & _sampler;
edoBounder<EOT> & _bounder;
public:
moRealNeighborhood( Distrib & distrib, edoSampler<Distrib> & sampler, edoBounder<EOT> & bounder ) : _distrib(distrib), _sampler(sampler), _bounder(bounder) {}
/**
* It alway remains at least a solution in an infinite neighborhood
* @param _solution the related solution
* @return true
*/
virtual bool hasNeighbor(EOT &)
{
return true;
}
/**
* Draw the next neighbor
* @param _solution the solution to explore
* @param _current the next neighbor
*/
virtual void next(EOT &, Neighbor & _current)
{
_current.bounder( &_bounder );
// Draw a translation in the distrib, using the sampler
_current.translation( _sampler( _distrib ) );
}
/**
* Initialization of the neighborhood
* @param _solution the solution to explore
* @param _current the first neighbor
*/
virtual void init(EOT & _solution, Neighbor & _current)
{
// there is no difference between an init and a random draw
next( _solution, _current );
}
/**
* There is always a solution in an infinite neighborhood
* @param _solution the solution to explore
* @return true
*/
virtual bool cont(EOT &)
{
return true;
}
/**
* Return the class Name
* @return the class name as a std::string
*/
virtual std::string className() const {
return "moRealNeighborhood";
}
};
#endif // __moRealNeighborhood_h__