code: def unwrapped_ball(data):
      r"""Unwrapped ball benchmark function.
  
      .. list-table::
         :widths: 10 50
         :stub-columns: 1
  
         * - Range
           - :math:`\mathbf{x} \in [-2, 8]^n`
         * - Function
           - :math:`f(\mathbf{x}) = \\frac{10}{5 + \sum_{i=1}^n (x_i - 3)^2}`
      """
      return 10.0 / (5.0 + sum((d - 3) ** 2 for d in data))
  
file_path: deap/deap/benchmarks/gp.py
imports: from math import exp, sin, cos
label_desc: Use image node_id 4 for calling a global function with example usage: unwrapped_ball(data) and returns: unknown