Solving Unconstrained Global Optimization Problems via Hybrid Swarm Intelligence Approaches

Table 1

The parameter settings for the proposed RGA-PSO and AIA-PSO approaches.

Methods	Parameter settings	Search space
External RGA	𝑝𝑐,RGA= 1; 𝑝𝑚,RGA= 0.15; psRGA= 20; 𝑔max,RGA= 20	[𝜒^𝑙,𝜒^𝑢] = [0.1,1]; [𝑐^𝑙1,𝑐^𝑢1] = [0.1,5]; [𝑐^𝑙2,𝑐^𝑢2] = [0.1,5]
External AIA	𝑝rt,AIA = 0.9; rsAIA = 20; 𝑔max,AIA = 20
Internal PSO	psPSO = 20; 𝑔max,PSO = 1000 for 𝑁≤3; 𝑔max,PSO = 3000 for 5≤𝑁≤30	[𝑥^𝑙𝑛, 𝑥^𝑢𝑛] for a UGO problem