Mutation Strategy Based on Step Size and Survival Rate for Evolutionary Programming

Algorithm 1

Algorithm of SSMSEP.

(1)	T/∗Set constant ∗/
(2)	S_RATE/∗Set constant ∗/
(3)	Update both popStepSize[1…POPNO] and popStepSizeRaw[1…POPNO] after tournament selection;
(4)	= popStepSizeRaw[1…POPNO];
(5)	for i: POPNO do
(6)	if pop[i] is offspring then
(7)	totalPopStepSize + = popStepSize[i];
(8)	survivedOffspringNo ++;
(9)	end if
(10)	end for
(11)	= totalPopStepSize/survivedOffspringNo;/∗Renew ∗/
(12)	= survivedOffspringNo/POPNO;/∗Renew survival rate∗/
(13)	= mean();/∗Renew ∗/
(14)	ifthen
(15)	;/∗Set mutation type C∗/
(16)	else ifthen
(17)	;/∗Set mutation type ∗/
(18)	;/∗Renew for ∗/
(19)	else
(20)	;/∗Set mutation type ∗/
(21)	;/∗Set 1 for ∗/
(22)	end if