Swarm Intelligence Algorithms

Source-code of GWO algorithm in C++ 213

39 r2=rand ( ) ;

40 A2=2∗a∗ r1−a ;

41 C2=2∗ r2 ;

42 D_beta=abs ( C2∗Beta_pos ( j )−P o s i t i o n s ( i , j ) ) ;

43 X2=Beta_pos ( j )−A2∗D_beta ;

44 r1=rand ( ) ;

45 r2=rand ( ) ;

46 A3=2∗a∗ r1−a ;

47 C3=2∗ r2 ;

48 D_delta=abs (C3∗ Delta_pos ( j )−P o s i t i o n s ( i , j ) ) ;

49 X3=Delta_pos ( j )−A3∗ D_delta ;

50 P o s i t i o n s ( i , j )=(X1+X2+X3) /3 ;

51 en d % Return back t h e sea rc h a g e n ts th a t go beyond t he b oun da ri e s

o f the s ea r ch space

52 Flag4ub=P o s i t i o n s ( i , : ) >ub ;

53 Fl a g 4l b=P o s i t i o n s ( i , : )<l b ;

54 P o s i t i o n s ( i , : ) =( P o s i t i o n s ( i