Zakharov¶ class gob.benchmarks.zakharov.Zakharov[source]¶ Bases: Benchmark The Zakharov function. \(f(x) = \sum_{i=1}^d x_i^2 + \left(\sum_{i=1}^d \frac{1}{2} i x_i\right)^2 + \left(\sum_{i=1}^d \frac{1}{2} i x_i\right)^4\). 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
