Mexican hat test function generator.

Description

The Mexican hat function is defined slightly differently by different people. The definition used here is

Usage

1
  mexican_hat_function(dimensions)

Arguments

dimensions

Size of parameter space.

Details

f(x) = -(1 - x'x) * exp(-0.5 * x'x)

Note that we have flipped the sign of the function so that it is a minimization problem like all other SOO functions.

Value

A soo_function.

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