| Class | Description | 
|---|---|
| BinaryTournament | 
 This class implements an binary tournament selection operator 
 | 
| BinaryTournament2 | 
 This class implements an operator for binary selections using the same code
 in Deb's NSGA-II implementation 
 | 
| Selection | 
 This class represents the super class of all the selection operators 
 | 
| SelectionFactory | 
 Class implementing a factory of selection operators 
 |