Research on Two-Stage Joint Optimization Problem of Green Manufacturing and Maintenance for Semiconductor Wafer

Table 12

The results of Wilcoxon signed rank test.

Indicator	MMVO		MSSA		NSGA-II		MOPSO
	SP	0.624 (0.000)	N(Y)	0.000 (0.000)	Y(Y)	0.000 (0.000)	Y(Y)	0.000 (0.000)	Y(Y)
GD	0.000 (0.000)	Y(Y)	0.000 (0.000)	Y(Y)	0.000 (0.000)	Y(Y)	0.000 (0.000)	Y(Y)
IGD	0.000 (0.000)	Y(Y)	0.000 (0.000)	Y(Y)	0.000 (0.000)	Y(Y)	0.000 (0.000)	Y(Y)