question about a and r1 and r2 #64
Description
a and r1 and r2 are random numbers while according to "S. Mirjalili, S. M. Mirjalili, A. Lewis, Grey Wolf Optimizer, Advances in Engineering Software , vol. 69, pp. 46-61, 2014, DOI: http://dx.doi.org/10.1016/j.advengsoft.2013.12.007"
they should be arrays. why these parameters are set to be random numbers in this code?