An Effective Hybrid Algorithm Based on Particle Swarm Optimization with Migration Method for Solving the Multiskill Resource-Constrained Project Scheduling Problem

Algorithm 1

Migration.

	Input: Pall–the current population
	Output: Pnew–the population after moving
	Begin
(1)	Pnew = {}
(2)	For i = 1 to size(P)
(3)	Pi ← Pall[i];
(4)	For j = 1 to n
(5)	L^i ← the subset of resource can be performed the task Li
(6)	L^i ← Sort(L^i)
(7)	idx ← index of resource executed the task i
(8)	idx = size(L^i) – idx + 1
(9)	Li = L^i[idx]
(10)	End for // j
(11)	Pnew = Pnew + {Pi}
(12)	End for // i
(13)	Return Pnew;
	End Function