Algorithm 1. Selection of IPs for SGP.
procedure IPSelect($n_0,M,X,y,\rho$)
Randomly Select $X_0,y_0$ from $X,y$ with $|X_0|=|y_0|=n_0$
$k^{\ast }=\mathrm{a}\mathrm{r}\mathrm{g}\mathrm{m}\mathrm{a}\mathrm{x}logp(y_0|\mathrm{G}\mathrm{P}(k,X_0,y_0))$
for $z\in X-X_0$ do
if $max\{k^{\ast }(z,x_0)|x_0\in X_0\}<\rho$ then
$X_0\leftarrow X_0\cup \{z\}$
if $|X_0|=M$ then
break
return X 0