A New Biobjective Model to Optimize Integrated Redundancy Allocation and Reliability-Centered Maintenance Problems in a System Using Metaheuristics

Table 6

Boundary values for reliability.

Method	Small size problems			Medium size problems			Large size problems
	NSGA-II	MOPSO	MOFA	NSGA-II	MOPSO	MOFA	NSGA-II	MOPSO	MOFA
Mean	0.991548	0.945431	0.96181	0.985369	0.914826	0.938127	0.99101	0.86809	0.90353
Lower bound	0.981583	0.908162	0.939269	0.970327	0.860268	0.909683	0.98771	0.80074	0.86255
Upper bound	0.996518	0.988152	0.980975	0.994157	0.974125	0.957834	0.99190	0.94698	0.93663