Particle Swarm Optimization Algorithm for Unrelated Parallel Machine Scheduling with Release Dates

Table 7

Comparison between two PSOs.

	Problem	Initial heuristic	O, O^×, and O^+ operators within formulas (4)-(5)	Local search
HDPSO	𝑃||𝐶max	n/a	Coding scheme and LPT rule are not suitable for the 𝑅|𝑟𝑗|𝐶max problem	Local search algorithm
PSO	𝑅|𝑟𝑗|𝐶max	SRD_Reassign	Coding scheme, SRD, and ECT are designed for the 𝑅|𝑟𝑗|𝐶max problem	LSP