Improved Barebones Particle Swarm Optimization with Neighborhood Search and Its Application on Ship Design

Table 8

Computational results for minimizing lightship weight.

Objective	Parsons and Scott [24]	PSO	BPSO	NSPSO	NSBPSO
Transportation cost (𝑇𝑐)	9.474	9.374	9.341	9.325	9.286
Lightship weight (𝐿𝑠)	5240.3	5019.9	4946.6	4932.6	4809.2
Annual cargo (𝐴𝑐)	386500	371960	369257	366855	361372
𝐿	150.73	155.32	154.59	155.7	152.8
𝐵	25.12	24.36	24.42	24.78	22.87
𝐷	13.84	14.43	14.18	13.02	13.92
𝑇	10.39	10.76	10.62	10.38	10.57
𝐶𝐵	0.750	0.693	0.69	0.705	0.750
𝑉𝑘	14.00	13.62	13.78	13.29	13.25