View source: R/FUNC__Schwefel.R
schwefel_func | R Documentation |
Implementation of n-dimensional Schwefel function.
schwefel_func(x)
x |
numeric or complex vector. |
On an n-dimensional domain it is defined by
\mjdeqnf(\vecx) = \sum_i=1^n \left[ -x_i\sin(\sqrt|x_i|) \right],f(x) = sum_1^n [ -x_i*sin(sqrt(|x_i|) ], and is usually evaluated on \mjeqnx_i \in [ -500, 500 ]x_i in [-500, 500], for all \mjeqni=1,...,ni=1,...,n. The function has one global minimum at \mjeqnf(\vecx) = -418.9829nf(x) = -418.9829n for \mjeqnx_i=420.9687x_i=420.9687 for all \mjeqni=1,...,ni=1,...,n.
The value of the function.
Schwefel1981EmiR
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