soobench (version 1.9.18)

generate_ellipsoidal_function: Generator for ellipsoidal test functions.

Description

The ellipsoidal test function is a badly conditioned variant of the sphere function. The definition used here is

Usage

generate_ellipsoidal_function(dimensions)

Arguments

dimensions

[integer(1)] Size of parameter space.

Value

A soo_function.

Note that the functions returned by this generator only differ in the elongated axis from those returned by generate_discus_function.

Details

$$f(x)=\sum _{i=1}^n{10}^{6\frac{i}{n}}{x}_i^2$$

Examples

# NOT RUN {
f <- generate_ellipsoidal_function(2)
plot(f, rank=TRUE)

# }