Algorithm 1. AGD algorithm for M2TL in Eq. (5)
1.	Initialization: h0 > 0,η > 1, W0, ${\overline{W}}_0={\mathbf{W}}_0$, h = h0 and α0 = 1.
2.	for t=0,1,2,… until convergence of Wt do:
3.	Set h=ht
4.	while $F\left(q_h\right({\overline{W}}_t\left)\right)>Q_h\left(q_h\right({\overline{W}}_t),{\overline{W}}_t)$, h = ηh
5.	Set ht+1=h and compute
	Wt+1 = argminwQht+1 ($\mathbf{W},{\overline{W}}_t$), ${\alpha }_{t+1}=\frac{2}{t+3}$, βt+1 = Wt+1–Wt and ${\overline{\mathbf{W}}}_{t+1}={\mathbf{W}}_{t+1}+\frac{1-{\alpha }_t}{{\alpha }_t}{\alpha }_{t+1}{\beta }_{t+1}$
	end-while
6.	end-for