Intelligent Warehouse Robot Scheduling System Using a Modified Nondominated Sorting Algorithm

Table 5

Experimental results of HV on ZDTs (mean and standard deviation).

Problem	M	NSGAII	IBEA	MBNSGAII
ZDT1	2	7.1925e-1 (1.76e-4) -	7.2017e-1 (1.36e-4) -	7.2031e-1 (8.51e-5)
ZDT2	2	4.4399e-1 (2.03e-4) -	4.4410e-1 (1.58e-4) -	4.4485e-1 (6.70e-5)
ZDT3	2	5.9938e-1 (8.34e-5) -	5.9816e-1 (1.17e-4) -	5.9973e-1 (4.53e-5)
ZDT4	2	7.1800e-1 (1.09e-3) =	7.0312e-1 (9.85e-3) -	7.1735e-1 (5.54e-4)
ZDT5	2	8.1676e-1 (1.20e-2) =	8.1119e-1 (9.16e-3)	8.1451e-1 (3.26e-4)
ZDT6	2	3.8826e-1 (1.18e-4) =	3.8766e-1 (1.17e-4) -	3.8832e-1 (5.60e-5)