Generalised Adaptive Harmony Search: A Comparative Analysis of Modern Harmony Search

Table 3

Average scores and standard deviations over 50 runs for 100-dimensional problems. The optimisers were allowed to run for 500,000 function evaluations.

	Ackley	Griewank	Rosenbrock	Rastrigin†
HS
Best	0.0142	0.0050	162.5829	0.2280
Standard deviation	0.0004	0.0080	49.5829	0.0130
Hits	50	34	0	0
DLHS
Best	0.2281	0.0004	142.4515	1.3140
Standard deviation	0.0130	0.0070	39.5126	3.1364
Hits	50	50	0	32
EHS
Best	0.0009	0.0001	97.2555	388.2894
Standard deviation	0.0006	0.0007	7.4711	20.5949
Hits	50	50	0	0
AHS
Best	0.0003	0	96.4333	6.7471
Standard deviation	0.0006	0	0.2943	2.3279
Hits	50	50	0	0

†The accuracy tolerance for awarding a successful hit on the global minimum was decreased to 0.1 for 100-dimensional Rastrigin’s function.