adana (version 1.1.0)

selers: Exponantial Ranking Selection

Description

The Exponantial Ranking Selection operator is a selection operator that uses probabilities obtained by exponentially weighting the ordinal numbers of individuals.

Usage

selers(fitvals, ns, selbc, ...)

Arguments

fitvals

Vector of fitness values belonging to individuals

ns

Number of individuals to be selected

selbc

Base of exponent

…

Further arguments passed to or from other methods.

Value

The indices of randomly selected individuals are returned.

See Also

select, selrand, selrswrp, selrws, selrws2, selrss, selsus, seldet, selwscale, selsscale, selsscale2, sellscale, selrscale, selrscale2, selpscale, selescale, seltour, seltour2, selboltour, sellrs, sellrs2, sellrs3, selnlrs

Examples

# NOT RUN {
fitvals = c(6, -1, 2, 4, 5) 
cnames = paste0("C",1:length(fitvals)) 
matpool = selers(fitvals, selbc=0.1)
cat(cnames[matpool],"\n")
matpool = selers(fitvals, selbc=0.8)
cat(cnames[matpool],"\n")
# }