Hybrid Algorithms for Fuzzy Reverse Supply Chain Network Design

Table 8

Distribution plan by PSO-GA (first period).

From	To	Echelon 2				Echelon 3			Echelon 4
		𝑃(2.1)	𝑃(2.2)	𝑃(2.3)	𝑃(2.4)	𝑃(3.1)	𝑃(3.2)	𝑃(3.3)	𝑃(4.1)	𝑃(4.2)	𝑃(4.3)
Echelon 1	𝑃(1.1)	10^a, 6^b, 49^c	73, 3, 6	42, 110, 59	24, 253, 5
	𝑃(1.2)	142, 47, 4	174, 26, 33	34, 18, 2	102, 10, 234
	𝑃(1.3)	157, 24, 57	256, 38, 1	7, 29, 56	22, 11, 55
	𝑃(1.4)	74, 39, 6	76, 17, 21	31, 8, 13	74, 14, 1
Echelon 2	𝑃(2.1)					177, 3, 83	116, 8, 0	82, 103, 25
	𝑃(2.2)					458, 2, 37	109, 14, 17	8, 67, 6
	𝑃(2.3)					53, 100, 60	41, 3, 3	17, 58, 65
	𝑃(2.4)					111, 236, 9	10, 29, 244	92, 11, 30
Echelon 3	𝑃(3.1)								170, 0, 0	100, 0, 174	91, 0, 255
	𝑃(3.2)								95, 0, 0	47, 0, 0	123, 0, 0
	𝑃(3.3)								139, 253, 101	213, 155, 32	245, 204, 0

aProduct X; ^bproduct Y; ^cproduct Z.