A Scheduling Problem to Minimize Total Weighted Tardiness in the Two-Stage Assembly Flowshop

Table 4

The performance of the four heuristics according to RDD and TF under n = 9, m = 2.

RDD	TF	HEDD		HWT		WSPTMAX		WSPTAVER
		Aver. error	NO	Aver. error	NO	Aver. error	NO	Aver. error	NO
0.2	0.2	0.868	4	0.501	6	0.568	10	0.561	10
	0.5	0.982	0	0.593	10	0.601	8	0.579	5
	0.8	0.997	0	0.677	10	0.674	8	0.705	5
0.5	0.2	0.624	11	0.676	6	0.814	2	0.8	3
	0.5	0.931	5	0.627	6	0.626	8	0.652	6
	0.8	0.977	1	0.769	6	0.72	9	0.725	6
0.8	0.2	0.221	16	0.856	3	0.796	2	0.802	0
	0.5	0.905	5	0.74	7	0.723	6	0.728	7
	0.8	0.985	1	0.667	7	0.646	10	0.639	11