A Two-Stage Offline-to-Online Multiobjective Optimization Strategy for Ship Integrated Energy System Economical/ Environmental Scheduling Problem

Table 4

Average values and standard deviations of hypervolume values by the four methods.

Cases	Method 1		Method 2		Method 3		Method 4
	H-values	Standard deviations	H-values	Standard deviations	H-values	Standard deviations	H-values	Standard deviations
Case 1	0.7051	5.2314e − 03	0.6241	9.9878e − 03	0.1648	3.2148e − 02	0.1135	7.2615e − 02
Case 2	0.8014	7.2457e − 03	0.6987	1.5414e − 02	0.0737	7.0325e − 02	0.0341	7.9984e − 02