Double Geometric Distribution Mutator

"Double Geometric" mutation operator for integer parameters: with probability p a random geometrically distributed value is added, and another (different) one subtracted.

mutDoubleGeomScaled scales sdev with each component's range and then uses geomp = (sqrt(2 * sdev^2 + 1) - 1) / sdev^2.

mutDoubleGeom(ind, p = 1, geomp = 0.9, lower, upper)

mutDoubleGeomScaled(ind, p = 1, sdev = 0.05, lower, upper)

Arguments

ind	[integer] individual to mutate.
p	[numeric(1)] per-entry probability to perform mutation.
geomp	[numeric] geometric distribution parameter.
lower	[integer] lower bounds of ind values. May have same length as ind or may be a single number, if the lower bounds are the same for all values.
upper	[integer] upper bounds of ind values. May have same length as ind or may be a single number, if the upper bounds are the same for all values.
sdev	[numeric] standard deviation, relative to upper - lower.

Value

[integer]

See also

Other operators: mutGaussIntScaled(), mutGaussInt(), mutGaussScaled(), mutPolynomialInt(), mutRandomChoice(), mutUniformInt(), recGaussian(), recIntIntermediate(), recIntSBX()