Rank selection method.

Namespace:  AForge.Genetic
Assembly:  AForge.Genetic (in AForge.Genetic.dll) Version: (


public class RankSelection : ISelectionMethod


The algorithm selects chromosomes to the new generation depending on their fitness values - the better fitness value chromosome has, the more chances it has to become member of the new generation. Each chromosome can be selected several times to the new generation.

This algorithm is similar to Roulette Wheel Selection algorithm, but the difference is in "wheel" and its sectors' size calculation method. The size of the wheel equals to size * ( size + 1 ) / 2, where size is the current size of population. The worst chromosome has its sector's size equal to 1, the next chromosome has its sector's size equal to 2, etc.

Inheritance Hierarchy


See Also