ENN	Euler neural network
$\rho$	Specific heat density
GNDO	Generalized normal distribution optimization
$T_i$	Initial temperature
MAD	Mean absolute deviation
C	Specific heat
TIC	Theil’s inequality coefficient
$T_s$	Sink temperature
NSE	Nash–Sutcliffe efficiency
t	Thickness of porous fin
ENSE	Error in Nash–Sutcliffe efficiency
$v\left(x\right)$	Velocity of buoyancy flow
IPA	Interior point algorithm
L	Length of porous fin
RMSE	Root mean square error
$\overline{\zeta }$	Constant
DTM	Differential Transform Method
$B_k$	Bernoulli’s number
ADM	Adomian decomposition method
$a_i^t$	Trail Vector
h	Coefficient of convective heat transfer
$\eta$	Penalty factor
HPM	Homotopy perturbation Method
$d_i$	Standard Variance