Integrated Quality-Based Production-Distribution Planning in Two-Echelon Supply Chains

Table 4

The results of solving random samples with different methods.

No	Number of manufacturing plants	Number of customers	Time to solve (second)/deviation from global solution (%)
			Main	Quadratic		PSO
1	10	30	60	45	0	70	0
2	10	50	110	87	0	75	0
3	20	100	320	183	0	92	2
4	20	200	1270	582	0	180	4
5	20	500	3850	1300	0	225	3.7
6	20	700	12,000	4300	0	310	5.2
7	20	1000	58,000	6400	0	390	4
8	20	5000	—	18,600	0	840	—
9	20	10,000	—	—	—	1200	—
10	20	50,000	—	—	—	3740	—