\begin{frame}
	\begin{block}{Acknowledgements}
		\begin{itemize}\justifying
			%\footnote{xx}
			\item For most of the lecture, I have borrowed ideas from the videos by Ryan Harris on ``visualize backpropagation'' (available on youtube)
			\item Some content is based on the course CS231n\footnote{http://cs231n.stanford.edu/2016/} by Andrej Karpathy and others
		\end{itemize}
	\end{block}
\end{frame}
