Sumpow¶ class gob.benchmarks.sumpow.Sumpow[source]¶ Bases: Benchmark The Sum of different power function. \(f(x) = \sum_{i=1}^d |x_i|^{i+1}\) Its minimum is \(0\) achieved at \(x = 0\). 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