An Adaptive Reference Vector Adjustment Strategy and Improved Angle-Penalized Value Method for RVEA

Algorithm 2

Reference vector adjustment.

	Input:; ; the combined population ;
	Output: updated ;
(1)	fordo
(2)	;
(3)	fordo
(4)	;
(5)	Associate each solution in with an unit reference vector in according to Definition 2;
(6)	fordo
(7)	Find the neighborhood reference vectors of among and store as ;
(8)	Fordo
(9)	if no solution is associated to then
(10)	;
(11)	whiledo
(12)	;
(13)	fordo
(14)	Calculate angle position value for ;
(15)	;
(16)
(17)	Remove all the solutions that own the same neighborhood reference vectors with in ;