A Modified Priority-Based Encoding for Design of a Closed-Loop Supply Chain Network Using a Discrete League Championship Algorithm

Table 8

The average of the objective values for each problem instance (in large scale problems).

Problem instance #	PB1	PB2	PB3
15	36913935	35518893	33938760
16	40865814	39330392	36800070
17	45761578	44397034	42238210
18	49926096	48933683	46045200
19	58336893	56463500	53420906
20	64568402	62410560	58308146
21	69765594	67512119	64137591