% \begin{figure}[t]
%     \begin{subfigure}[t]{\columnwidth}
%         \centering
%         \input{figures/alignment_probs/citeulike}
%         % \vspace*{-5mm}
%         \caption{Results on CiteULike-a}
%     \end{subfigure}
%     \\
%     \begin{subfigure}[t]{\columnwidth}
%         \centering
%         \input{figures/alignment_probs/cellphones}
%         % \vspace*{-5mm}
%         \caption{Results on Cell Phones}
%     \end{subfigure}
%     \\
%     \begin{subfigure}[t]{\columnwidth}
%         \centering
%         \input{figures/alignment_probs/movielens}
%         % \vspace*{-5mm}
%         \caption{Results on MovieLens}
%     \end{subfigure}
%     \\
%     \begin{subfigure}[t]{\columnwidth}
%         \centering
%         \input{figures/alignment_probs/videogames}
%         % \vspace*{-5mm}
%         \caption{Results on Video Games}
%     \end{subfigure}%
%     \caption{In each row, the left figure compares methods to derive coupling probabilities $\pi^u$ defined in Section ~\ref{sec:model_analysis}, i.e., \emph{Diag}, \emph{Norm}, \emph{Sink}. The right figure contrasts methods, \emph{Reg}, \emph{Map}, \emph{Def} described in Section ~\ref{sec:model_analysis}, to transfer interest signals between two modalities. \textcolor{blue!60!white}{Blue bars} represent Recall@10 while \textcolor{red!60!white}{red bars} show NDCG@10.}
%     \label{fig:align_transfer}
% \end{figure}

\begin{figure}[t]
    \begin{subfigure}[t]{\columnwidth}
        \centering
        % \input{figures/alignment_probs/citeulike}
        \includegraphics[scale=0.2]{figures/alignment_probs/align_citeulike.pdf}%
        \includegraphics[scale=0.2]{figures/alignment_probs/fusion_citeulike.pdf}
        % \vspace*{-5mm}
        % \caption{Results on CiteULike-a}
    \end{subfigure}
    \\
    \begin{subfigure}[t]{\columnwidth}
        \centering
        % \input{figures/alignment_probs/cellphones}
        \includegraphics[scale=0.2]{figures/alignment_probs/align_cellphones.pdf}%
        \includegraphics[scale=0.2]{figures/alignment_probs/fusion_cellphones.pdf}
        % \vspace*{-5mm}
        % \caption{Results on Cell Phones}
    \end{subfigure}
    \\
    \begin{subfigure}[t]{\columnwidth}
        \centering
        % \input{figures/alignment_probs/videogames}
        \includegraphics[scale=0.2]{figures/alignment_probs/align_videogames.pdf}%
        \includegraphics[scale=0.2]{figures/alignment_probs/fusion_videogames.pdf}
        % \vspace*{-5mm}
        % \caption{Results on Video Games}
    \end{subfigure}%
    \\
    \begin{subfigure}[t]{\columnwidth}
        \centering
        % \input{figures/alignment_probs/movielens}
        \includegraphics[scale=0.2]{figures/alignment_probs/align_movielens.pdf}%
        \includegraphics[scale=0.2]{figures/alignment_probs/fusion_movielens.pdf}
        % \vspace*{-5mm}
        % \caption{Results on MovieLens}
    \end{subfigure}
    \caption{In each row, the left figure compares methods to derive $\pi^u$, i.e., \emph{Diag}, \emph{Norm}, \emph{Sink}. The right figure contrasts methods, \emph{Reg}, \emph{Map}, \emph{Def}, for transferring user interests. }
    % \textcolor{black}{Blue bars} represent Recall@10 while \textcolor{black}{red bars} show NDCG@10.}
    \label{fig:align_transfer}
\end{figure}
% \begin{figure}[t]
%     \begin{subfigure}[t]{\columnwidth}
%         \centering
%         \input{figures/alignment_probs/citeulike}
%         % \vspace*{-5mm}
%         \caption{Results on CiteULike-a}
%     \end{subfigure}
%     \\
%     \begin{subfigure}[t]{\columnwidth}
%         \centering
%         \input{figures/alignment_probs/cellphones}
%         % \vspace*{-5mm}
%         \caption{Results on Cell Phones}
%     \end{subfigure}
%     \\
%     \begin{subfigure}[t]{\columnwidth}
%         \centering
%         \input{figures/alignment_probs/movielens}
%         % \vspace*{-5mm}
%         \caption{Results on MovieLens}
%     \end{subfigure}
%     \\
%     \begin{subfigure}[t]{\columnwidth}
%         \centering
%         \input{figures/alignment_probs/videogames}
%         % \vspace*{-5mm}
%         \caption{Results on Video Games}
%     \end{subfigure}%
%     \caption{In each row, the left figure compares methods to derive coupling probabilities $\pi^u$ defined in Section ~\ref{sec:model_analysis}, i.e., \emph{Diag}, \emph{Norm}, \emph{Sink}. The right figure contrasts methods, \emph{Reg}, \emph{Map}, \emph{Def} described in Section ~\ref{sec:model_analysis}, to transfer interest signals between two modalities. \textcolor{blue!60!white}{Blue bars} represent Recall@10 while \textcolor{red!60!white}{red bars} show NDCG@10.}
%     \label{fig:align_transfer}
% \end{figure}
