Comparative Analysis of Linear and Nonlinear Pattern Synthesis of Hemispherical Antenna Array Using Adaptive Evolutionary Techniques

Table 2

Run time and fitness comparison of standard functions.

Test function	Equation		DE	FA
Rosenbrock's		N	2	2
equation	𝑓(𝑥,𝑦)=(1−𝑥)^2+100(𝑦−𝑥^2)^2	Fitness	0	0
		Iterations	1592	6451
		CPU time (sec)	0.1872	465.1170
Griewank's		N	30	30
equation	1𝑓(𝑥)=1+400^𝑛𝑖∑=1𝑥^2𝑖−∏^𝑛𝑖=1 𝑥cos^𝑖√𝑖	Fitness	0	0
		Iterations	2501	2664
		CPU time (sec)	0.1825	166.0471
Ackley's		N	30	30
equation	𝑓(𝑥)=−20exp^(−1/5)(1/𝑛)∑𝑛𝑖=1𝑥2𝑖	Fitness	0	0
	−exp^(−1/𝑛)∑𝑛𝑖=1cos2𝜋𝑥𝑖20+𝑒	Iterations	5960	6451
		CPU time (sec)	4.3368	96.1170
Rastrigin's		N	30	30
equation	𝑓(𝑥)=∑^𝑛𝑖=1 (𝑥^2𝑖−𝐴cos2𝜋𝑥𝑖)+𝐴𝑛	Fitness	0	0
		Iterations	9548	9751
		CPU time (sec)	6.9108	461.5791