mutation: Mutates a random allele

In dchen49/GA: Variable Selection via Genetic Algorithm

Description

This mutation function will randomly change 1 to 0 or 0 to 1. The default probability of mutation is 0.1. The mutation function is used in evolve function.

Usage

mutation(population, mutation.prob = 0.1)

Arguments

population	population matrix of dimension n * p
mutation.prob	mutation probability

Author(s)

Qi Chen

See Also

evolve

Examples

N <- 1000
data <- matrix(sample(c(0, 1), N, replace = TRUE), ncol = 20)
mutation(data)



## The function is currently defined as
function (population, mutation.prob = 0.1)
{
    index <- replicate(dim(population)[2], expr = runif(dim(population)[1])) <
        mutation.prob
    index2 <- population == 1
    population[which((index + index2) == 2)] <- 0
    index3 <- population == 0
    population[which((index + index3) == 2)] <- 1
    return(population)
  }

dchen49/GA documentation built on May 3, 2019, 6:43 p.m.