SelectSTournament: Stochastic tournament selection.

In xegaSelectGene: Selection of Genes and Gene Representation Independent Functions

Stochastic tournament selection.

Description

SelectSTournament() implements selection through a stochastic tournament between lF$TournamentSize() randomly selected genes. A gene wins a tournament with a probability proportional to its fitness. The default of lF$TournamentSize() is 2. A tournament with 2 participants has the least selection pressure.

lF$TournamentSize() must be less than the population size.

Usage

SelectSTournament(fit, lF, size = 1)

Arguments

fit	Fitness vector.
lF	Local configuration.
size	Number of selected genes. Default: 1.

Value

The index vector of the selected genes.

See Also

Other Selection Functions: SelectDuel(), SelectLRSelective(), SelectLinearRankTSR(), SelectPropFit(), SelectPropFitDiff(), SelectPropFitDiffM(), SelectPropFitDiffOnln(), SelectPropFitM(), SelectPropFitOnln(), SelectSUS(), SelectTournament(), SelectUniform(), SelectUniformP()

Examples

fit<-sample(10, 15, replace=TRUE)
SelectSTournament(fit, NewlFselectGenes()) 
SelectSTournament(fit, NewlFselectGenes(), length(fit)) 

xegaSelectGene documentation built on April 16, 2025, 5:12 p.m.