Require: Initialize ${\mathit{\theta }}^{\left(0\right)}$ and ${\mathit{v}}^{\left(0\right)}$.

for s = 0,1,2,⋯do

Compute ${\mathit{a}}^{(s+1)}$ using (2.11)

Compute ${\mathit{\beta }}^{(s+1)}$ using (2.12)

Compute ${\mathit{\theta }}^{(s+1)}$ using (2.13)

Compute ${\mathit{v}}^{(s+1)}$ using (2.8)

if the convergence criterion is met, then

Stop and denote the last iteration by $\left(\widehat{\mathit{a}}\right(\lambda ),\widehat{\mathit{\beta }}(\lambda \left)\right)$,

else

s = s + 1.

end if

end for

After identifying the groups, estimate $(\widehat{\mathit{\alpha }},\widehat{\mathit{\beta }})$ using (2.14).

Ensure: Output