[Retracted] A Composite Particle Swarm Optimization Algorithm for Hospital Equipment Management Risk Control Optimization and Prediction

Table 1

The test time and results of test function.

Detection function	Algorithm	Value range	Mean difference (E)	Standard deviation (E)	Global optimal solution
Sphere	Composite particle swarm optimization	1.31E − 6∼0.23E − 11	0.13–7	0.02–6	1
	Particle swarm optimization	1.22E − 7∼0.14E − 10	0.23–8	0.02–8
Rastrigin	Composite particle swarm optimization	1.23E − 7∼1.03E − 11	0.02–7	0.01–8	1
	Particle swarm optimization	1.61E − 4∼1.43E − 10	0.03–4	0.01–5
Ackley	Composite particle swarm optimization	1.42E − 7∼1.03E − 13	0.04–7	0.01–8	1
	Particle swarm optimization	2.12E − 6∼1.03E − 13	0.13–6	0.01–7