Rosenbrock

Complexity

Total Complexity

4

Size/Duplication

Total Lines	19
Duplicated Lines	0 %

Importance

Changes	2
Bugs	0	Features	2

3 Methods

Rating	Name	Duplication	Size	Complexity
A	__init__()	0	3	1
A	function()	0	13	3
A	evaluate()	0	9	2

"""Implementation of Rosenbrock benchmark function."""

import math

__all__ = ['Rosenbrock']


class Rosenbrock(object):

    def __init__(self, Lower=-100, Upper=100):
        self.Lower = Lower
        self.Upper = Upper

    @classmethod
    def function(cls):
        def evaluate(D, sol):
            val = 0.0

            for i in range(D - 1):
                val = val + 100 * \
                    math.pow(sol[i + 1] - math.pow((sol[i]), 2),
                             2) + math.pow((sol[i] - 1), 2)

            return val

        return evaluate