A Discrete Group Search Optimizer for Hybrid Flowshop Scheduling Problem with Random Breakdown

Table 3

Performance of HDHS with different versions.

Problem	GSO		GSO-IVNS		GSO-IVNS-DE		DGSO
	AVE	MIN	AVE	MIN	AVE	MIN	AVE	MIN
j30c5e1	564.2	555	561.9	558	561.3	555	552.7	549
j30c5e2	721.4	716	720.0	716	722.5	716	700.7	697
j30c5e3	752.8	743	741.9	736	740.5	732	723.3	712
j30c5e4	704.5	695	702.5	695	700.5	688	685.3	674
j30c5e5	748.1	726	733.6	726	727.6	726	725.1	709
j30c5e6	743.2	737	737.3	730	731.1	721	718.1	708
j30c5e7	751.9	745	748.0	743	737.2	733	732.1	723
j30c5e8	859.0	824	842.1	801	822.2	788	786.8	771
j30c5e9	799.9	786	796.0	779	791.8	770	766.9	760
j30c5e10	750.2	738	738.4	718	729.6	715	718.5	710
Average	739.5	726	732.2	720	726.4	714	710.9	701