adana (version 1.1.0)

nunimut2: Adaptive Non-uniform mutation

Description

This operator is an adaptive mutation operator that increases the probability of the mutation severity approaching 0 as the number of generations increases.

This operator is used for value encoded (integer or real number) chromosomes.

Usage

nunimut2(y, lb, ub, g, gmax, mutb, ...)

Arguments

y

A vector. Chromosome of the offspring

lb

A vector. Lower bounds of genes

ub

A vector. Upper bounds of genes

g

Current generation number.

gmax

Maximum generation number.

mutb

An exponent parameter that sets non-uniformity

…

Further arguments passed to or from other methods.

Value

mutant

A vector. Chromosome of the offspring

mutgen

The number of the mutated gene.

See Also

mutate, bitmut, randmut, randmut2, randmut3, randmut4, unimut, boundmut, nunimut, powmut, powmut2, gaussmut, gaussmut2, gaussmut3, bsearchmut1, bsearchmut2, swapmut, invmut, shufmut, insmut, dismut, invswapmut, insswapmut, invdismut

Examples

# NOT RUN {
lb = c(2, 1, 3, 1, 0, 4)
ub = c(10, 15, 8, 5, 6, 9)
offspring = c(8, 6, 4, 1, 3, 7)
set.seed(12)
nunimut2(offspring, lb=lb, ub=ub, g=1, gmax=100, mutb=0.5)
set.seed(12)
nunimut2(offspring, lb=lb, ub=ub, g=50, gmax=100, mutb=0.5)
# }