Schwefel¶ class gob.benchmarks.schwefel.Schwefel[source]¶ Bases: Benchmark The Schwefel function. \(f(x) = 418.9828d - \sum_{i = 1}^d x_i \sin \left( \sqrt{|x_i|} \right)\). Its minimum is \(0\) achieved at \(x = 420.9687\). expr(x)[source]¶ 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
