\begin{frame}
  \frametitle{Outline}
  \begin{columns}
    \begin{column}{0.39\textwidth}
      \centering
      \begin{enumerate}
        \item Motivation
        \item Overview
        \item Evaluation
        \item Take away
      \end{enumerate}
    \end{column}
    \begin{column}{0.39\textwidth}
      \includegraphics[width=0.6\textwidth]{img/roadmap}
    \end{column}
  \end{columns}
\end{frame}