ilmdhc: ILM/DHC adaptation function

In adana: Adaptive Nature-Inspired Algorithms for Hybrid Genetic Optimization

ILM/DHC adaptation function

Description

ILM/DHC is an adaptive function with an increasing low mutation rate (ILM) and a decreasing high crossover rate (DHC) as the generation progresses (Hassanat et.al., 2019).

Usage

ilmdhc(g, gmax, ...)

Arguments

g	Current generation
gmax	Maximum generation
...	Further arguments passed to or from other methods.

Value

pc	Crossover rate
pm	Mutation rate

Author(s)

Zeynel Cebeci & Erkut Tekeli

References

Hassanat, A., Almohammadi, K., Alkafaween, E., Abunawas, E., Hammouri, A. and Prasath, V.B. (2019). Choosing mutation and crossover ratios for genetic algorithm: A review with a new dynamic approach. Information, 10(12), 390.

See Also

fixpcmut, adana1, adana2, leitingzhi, adana3

Examples

N = 50
gmax = 1000
g = c(1, 10, 50, 100, 250, 500, 750, gmax)
pc = ilmdhc(g=g, gmax=gmax)$pc
pc
nc = round(pc*N)
nc
pm = ilmdhc(g=g, gmax=gmax)$pm
pm
nm = round(pm*N)
nm
nm = ifelse (!nm, 1, nm)
nm
plot(pm, type="l", col=4, lwd=2, lty=1, xaxt="n", ylab="Ratio", xlab="Generation")
lines(pc, type="l", col=2, lwd=2, lty=2)
legend("top", inset=.02, c("pm","pc"), col=c(4,2), lty=c(1,2), horiz=TRUE, cex=0.8)
axis(1, at=1:length(g),labels=g, col.axis="red", las=2)

adana documentation built on March 18, 2022, 6:03 p.m.