Large-Scale Network Plan Optimization Using Improved Particle Swarm Optimization Algorithm

Table 3

The superiority of OIPSO in optimization of resource-leveling with fixed duration.

Optimization parameters	Case  1	Case  2	Case  3	Case  4
	1	1	1	1
	3.5	3.5	3.5	3.5
	0.4	0.4	0.4	0.4
	50	50	50	50
	100	100	100	100
The project duration of the network plan	135	135	135	135
The project duration of the initial particle	135	135	135	135
The resource variance corresponding to the initial particle	30	50	—	25
The resource variance corresponding to the optimization results	22.41	22.99	22.99	—

“—” denotes “no restrictions” or “no solution in a limited amount of computing time.” The other symbols’ meanings are the same as the previous.