Rosenbrock¶ class gob.benchmarks.rosenbrock.Rosenbrock[source]¶ Bases: Benchmark The Rosenbrock function. \(f(x) = \sum_{i=1}^{d-1} \left[100(x_{i+1} - x_i^2)^2 + (x_i - 1)^2 \right]\) Its minimum is \(0\) achieved at \(x_i = 1\). 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
