PyGKLS

../../_images/PyGKLS.png

Uses the pyGKLS package to generate random test functions, with control over their geometry.

class gob.benchmarks.pygkls.PyGKLS(dim, num_minima, domain, global_min, global_dist=None, global_radius=None, gen=None, smoothness='D')

Bases: Benchmark

expr(x)

The expression of the function.

Parameters:

x (array-like) – The point at which to evaluate the function.

Returns:

The value of the function at x.

Return type:

float

gradient(x)

Estimate the gradient of a function at a given point using finite differences.

Parameters:

  • f (callable) – The function to estimate the gradient of. It should take a single argument.

  • x (array-like) – The point at which to estimate the gradient of f.

  • eps (float, optional) – The perturbation used to estimate the gradient.

Returns:

The estimated gradient of f at x and the value of f at x.

Return type:

pair