Stochastic Multiple Chaotic Local Search-Incorporated Gradient-Based Optimizer

Algorithm 1

Pseudo-code of CGBO.

(1)	begin
(2)	/∗initialization of algorithm∗/
(3)	for do
(4)	Randomly generate individual
(5)	= evaluate
(6)	for do
(7)	Select three random individuals , , and current best .
(8)	/∗Parameter setting∗/
(9)	Generate parameter , and by equation (14).
(10)	Determine scale factor by means of iteration number.
(11)	Generate adjustment vectors GSR and DM.
(12)	/∗Gradient search rule∗/
(13)	for do
(14)	Optionally modify the value on each dimension , and obtain by equation (19).
(15)	ifthen
(16)	/∗Local escaping operator∗/
(17)	is given by equation (20).
(18)	else
(19)	/∗Chaotic local search∗/
(20)	ifthen
(21)	fordo
(22)	ifthen
(23)	Calculate based on and equation (36).
(24)	else
(25)	=