\documentclass[twoside,11pt]{article}

% Any additional packages needed should be included after jmlr2e.
% Note that jmlr2e.sty includes epsfig, amssymb, natbib and graphicx,
% and defines many common macros, such as 'proof' and 'example'.
%
% It also sets the bibliographystyle to plainnat; for more information on
% natbib citation styles, see the natbib documentation, a copy of which
% is archived at http://www.jmlr.org/format/natbib.pdf

\usepackage{KDDCUP09jmlrwcp2e}
\usepackage{url}

% Definitions of handy macros can go here

\newcommand{\dataset}{{\cal D}}
\newcommand{\fracpartial}[2]{\frac{\partial #1}{\partial  #2}}

% Heading arguments are {volume}{year}{pages}{submitted}{published}{author-full-names}

\jmlrheading{1}{2007}{1-16}{}{}{Author Name1 and Author Name2}{KDD cup 2009}

% Short headings should be running head and authors last names

\ShortHeadings{Short Title}{Author Surnames}
\firstpageno{1}

\begin{document}

\title{Full Paper Title}

\author{\name Author Name1 \email author1@institute.edu \\
       \addr First Line\\
       Second Line\\
       City, State, Zip Code, Country
       \AND
       \name Author Name2 \email author2@institute.edu \\
       \addr First Line\\
       Second Line\\
       City, State, Zip Code, Country}

\editor{Gideon Dror, Marc Boull\'e, Isabelle Guyon, Vincent Lemaire, David Vogel} % Order?

\maketitle

\begin{abstract}%   <- trailing '%' for backward compatibility of .sty file
This is the abstract.
\end{abstract}

\begin{keywords}
  Your keywords here, comma separated
\end{keywords}

\section{Introduction}
\label{sec:introduction}

Please limit your paper to {\bf 8 pages}. Submit by June 20, 2009 to kddcup09@clopinet.com. The papers will be pier reviewed and at revision time the number of pages might be increased.  \\

{\noindent \em Remainder omitted in this sample. See http://www.jmlr.org/papers/ for full paper.}

% Acknowledgements should go at the end, before appendices and references

\acks{We would like to acknowledge support for this project ...}

% Manual newpage inserted to improve layout of sample file - not
% needed in general before appendices/bibliography.
\bibliography{my_bib}

\newpage

\appendix
\section*{Appendix A. A theorem}
\label{sec:theorem}

% Note: in this sample, the section number is hard-coded in. Following
% proper LaTeX conventions, it should properly be coded as a reference:

%In this appendix we prove the following theorem from
%Section~\ref{sec:textree-generalization}:

In this appendix we prove the following theorem from
Section~1.1:

\noindent
{\bf Theorem} {\it Let ...} \hfill\BlackBox

\noindent
{\bf Proof}. We use the notation:

\vskip 0.2in
\bibliography{sample}

\end{document}