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Modify the moPopXoverRndNeighborhood to limit the number of neighbors

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git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@1910 331e1502-861f-0410-8da2-ba01fb791d7f
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verel 2010-08-24 16:40:40 +00:00
commit 5770cc8be6
1 changed files with 23 additions and 12 deletions
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35
trunk/paradiseo-mo/src/problems/bitString/moPopXoverRndNeighborhood.h
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@ -60,8 +60,9 @@ public:
/**
* Constructor
* @param _crossover the crossover operator
* @param _maxNeighbor maximum neighbors to explore in the neighborhood
*/
moPopXoverRndNeighborhood(eoQuadOp<SUBEOT> & _crossover): moRndNeighborhood<Neighbor>(), crossover(_crossover) {}
moPopXoverRndNeighborhood(eoQuadOp<SUBEOT> & _crossover, unsigned int _maxNeighbor = 0): moRndNeighborhood<Neighbor>(), crossover(_crossover), maxNeighbor(_maxNeighbor) {}
/**
* Test if it exist a neighbor
@ -79,6 +80,18 @@ public:
* @param _neighbor the first neighbor
*/
virtual void init(EOT & _solution, Neighbor & _neighbor) {
next(_solution, _neighbor);
nbNeighbor = 0;
}
/**
* Give the next neighbor
* apply a ones the crossover operato between random solutions
* @param _solution the solution to explore (population of solutions)
* @param _neighbor the next neighbor which is "random"
*/
virtual void next(EOT & _solution, Neighbor & _neighbor) {
unsigned int popSize = _solution.size();
// random solutions in the population
@ -98,16 +111,9 @@ public:
// apply the crossover
crossover(_neighbor.solution1(), _neighbor.solution2());
}
/**
* Give the next neighbor
* apply a ones the crossover operato between random solutions
* @param _solution the solution to explore (population of solutions)
* @param _neighbor the next neighbor which is "random"
*/
virtual void next(EOT & _solution, Neighbor & _neighbor) {
init(_solution, _neighbor);
// increase the number of neighbor explored
nbNeighbor++;
}
/**
@ -116,7 +122,10 @@ public:
* @return true if there is again a neighbor to explore: population size larger or equals than 2
*/
virtual bool cont(EOT & _solution) {
return _solution.size() > 1;
if (maxNeighbor != 0)
return (_solution.size() > 1) && (nbNeighbor < maxNeighbor);
else
return _solution.size() > 1;
}
/**
@ -129,6 +138,8 @@ public:
private:
eoQuadOp<SUBEOT> & crossover;
unsigned int maxNeighbor;
unsigned int nbNeighbor;
};
#endif