Routing Optimisation of Urban Medical Waste Recycling Network considering Differentiated Collection Strategy and Time Windows

Table 6

Comparison between the rules and the PSO algorithm on large-scale instances.

Instance		Rules	PSO
Group	ID
ISG7	1	100	95	899.48	−5.00%
	2	99	91	864.21	−8.08%
	3	96	89	872.12	−7.29%
	4	96	88	864.62	−8.33%
	5	98	93	858.85	−5.10%
ISG8	1	102	100	1107.1	−1.96%
	2	108	102	1111.35	−5.56%
	3	106	98	1104.23	−7.55%
	4	105	98	1143.90	−6.67%
	5	105	101	1116.67	−3.81%
ISG9	1	125	117	1361.83	−6.40%
	2	119	114	1372.91	−4.20%
	3	123	118	1382.82	−4.07%
	4	131	120	1370.40	−8.40%
	5	124	115	1373.64	−7.26%
Average	—	—	—	1120.28	−5.98%

Notes: (1) represents the feasible solution obtained by rules. denotes the global best solution obtained by PSO algorithm. (2) is the computation time of PSO algorithm in seconds. (3) .