julialang-lecture.tex

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%\title[Multiple Target Population Estimation]{A
%  Multiple Target Tracking Approach for Statistical Estimation of
%  Large Predator Population}

\newcommand{\balert}[1]{\textcolor{blue}{#1}}


\title{The Julia Language}
\subtitle{With a performance comparison in Kalman filtering}


%\subtitle
%{Presentation Subtitle} % (optional)

\author{Simo S\"arkk\"a}
% - Use the \inst{?} command only if the authors have different
%   affiliation.

\institute{Aalto University} % (optional, but mostly needed)

% - Use the \inst command only if there are several affiliations.
% - Keep it simple, no one is interested in your street address.

\date{November 10, 2015}

%\subject{Talks}
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  \begin{frame}<beamer>
    \frametitle{Contents}
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\begin{document}

%\logo{\pgfuseimage{university-logo-big}}

\begin{frame}
  \titlepage
\end{frame}

%\logo{\pgfuseimage{university-logo-small}}

%\begin{frame}
%  \frametitle{Contents}
%  \tableofcontents[pausesections]
%\end{frame}

\begin{frame}
  \frametitle{What is Julia?}

  \begin{itemize}[<+->]       
  \item Open-source \alert{programming language} for technical computing.
  \item Very \alert{Matlab-like} syntax.
  \item Interpreted language with a builtin \alert{JIT-compiler}.
  \item \alert{Fast program execution} -- closer to C than Matlab (they say).
  \item \alert{Modern programming concepts} found in Python and Lisp, but not in Matlab.
  \item \alert{Multiple dispatching} (kind of polymorphism).
  \item \alert{Operator overloading} (operators and functions).
  \begin{itemize}[<+->]       
  \item[$\Rightarrow$] {\it Demo}
  \end{itemize}
  \end{itemize}

\end{frame}

\begin{frame}
  \frametitle{Performance I}
  \centering
  Performance comparison from \url{http://julialang.org/}: 

  \vspace{0.5cm}

  \includegraphics[width=\textwidth]{perf}
\end{frame}

\begin{frame}
  \frametitle{Performance II}
  \centering
  \includegraphics[width=0.7\textwidth]{kf-benchmark/times}

  \alert{Relative computation time (filter + smoother):}

  \begin{tabular}{|c|c|c|c|c|c|}
  \hline
  {\bf C++}     & {\bf Java}    & {\bf Julia}   & {\bf Matlab}  & {\bf Octave}  & {\bf Python}  \\ 
  \hline
1       & 4       & 12      & 48      & 199     & 304 \\
\hline
  \end{tabular}
\end{frame}

\begin{frame}
  \frametitle{Quick practical experiences}

  \begin{itemize}[<+->]
  \item[\textcolor{green}\checkmark] \alert{Transliteration from Matlab} is very easy (with performance catches).
  \item[\textcolor{green}\checkmark] Faster than \alert{Matlab}, but loses to \alert{C++ and Java}.
  \item[\textcolor{green}\checkmark] Much faster than \alert{Python or Octave} (no surprise).
  \item[\textcolor{green}\checkmark] Some \alert{good programming features} (proper lists, functional programming, multiple dispaching, \ldots).
  \item[\textcolor{red}\checkmark] \alert{No objects or classes!}
  \item[\textcolor{red}\checkmark] Programming environment quite \alert{clumsy to get working}.
  \item[\textcolor{red}\checkmark] \alert{Plotting features} are just awful.
  \item[\textcolor{red}\checkmark] No proper \alert{IDEs}.
  \begin{itemize}[<+->]       
  \item[$\Rightarrow$] {\it Should I switch to it?} -- \alert{Not for now.}
  \end{itemize}
  \end{itemize}

\end{frame}

\end{document}