Fig. 3From: Interactive evolutionary computation with minimum fitness evaluation requirement and offline algorithm designShape of each test function for the case of two decision variables. a Sphere (\(-5.12 \le x_i \le 5.12\)). b Rosenbrock (\(-2.048 \le x_i \le 2.048\)). c Griewank (\(-512 \le x_i \le 512\)). d Ackley (\(-5 \le x_i \le 5\)). e Levy (\(-100 \le x_i \le 100\)). f Rastrigin (\(-5.12 \le x_i \le 5.12\))Back to article page