MH	Metaheuristic
SCP	Set-covering problem
P	Polynomial time
NP	Nondeterministic polynomial time
EAs	Evolutionary algorithms
MSA	Binary monkey search algorithm
ALO	Antlion optimization
CSA	Crow search algorithm
GA	Genethic Algorithm
MLST	Minimum labeling spanning tree
VANETs	Vehicular ad hoc networks
MST	Minimum spanning tree
MILP	Mixed-integer linear programs
ESN	Echo state network
ELM	Extreme Learning Machines
MRE	Magnetorheological elastomer
CNN	Convolutional neural network
NN	Neural network
DE	Differential evolution
GO	Growth optimizer
BGO	Binary Growth Optimizer
GR	Growth resistance
$I_t$	Current iteration
LF	Learning factor
KA	Knowledge acquisition
AF	Attenuation factor
FE	Current number of evaluations
MaxFE	Maximum number of evaluations
ub	Domain upper bound
lb	Domain lower bound
D	Population dimension
GWO	Grey wolf optimizer
PSA	Pendulum Search Algorithm
SCA	Sine–cosine algorithm