
% %%------------------------------------------------FIGURE ------------------------------------------------%%
% \begin{figure}[!hbt]
%     \centering
%     \begin{subfigure}{0.3\textwidth}
%         \centering
%         \includegraphics[width=1\columnwidth]{ssl_mu.jpg}
%         \caption{$\mat{M}_{i}$}
%     \end{subfigure}%
%         \hfill
%     \begin{subfigure}{0.3\textwidth}
%         \centering
%         \includegraphics[width=1\columnwidth]{ssl_theta.jpg}
%         \caption{$\mat{\Theta}_{i}$}
%     \end{subfigure}
%     \hfill
%     \begin{subfigure}{0.3\textwidth}
%         \centering
%         \includegraphics[width=1\columnwidth]{ssl_lambda.jpg}
%         \caption{$\mat{\Lambda}_{i} = \mat{M}_{i}  \smallsetminus  \mat{\Theta}_{i}$}
%     \end{subfigure}%
%     \caption{Example of SSL subsampling partitioning with a ratio $q=\frac{1}{2}$ and $w=4$. 
%     }
%     \label{fig:S1}
% \end{figure}
% %%------------------------------------------------FIGURE ------------------------------------------------%%

%%------------------------------------------------FIGURE ------------------------------------------------%%
\begin{figure}[!hbt]
    \centering
    \subfigure[$\mat{M}_{i}$]{%
        \includegraphics[width=0.3\textwidth]{ssl_mu.jpg}%
        \label{fig:sub1}%
    }%
    \hfill
    \subfigure[$\mat{\Theta}_{i}$]{%
        \includegraphics[width=0.3\textwidth]{ssl_theta.jpg}%
        \label{fig:sub2}%
    }%
    \hfill
    \subfigure[$\mat{\Lambda}_{i} = \mat{M}_{i} \smallsetminus \mat{\Theta}_{i}$]{%
        \includegraphics[width=0.3\textwidth]{ssl_lambda.jpg}%
        \label{fig:sub3}%
    }%
    \caption{Example of SSL subsampling partitioning with a ratio $q=\frac{1}{2}$ and $w=4$.}
    \label{fig:S1}
\end{figure}
%%------------------------------------------------FIGURE ------------------------------------------------%%
