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\textbf{ParadisEO Practices}  {\copyright Franck Seynhaeve,
Jean-Charles Boisson, Thomas Legrand} \Large{\textbf{\\\\
Lesson 4: Implement a simulated annealing using ParadisEO}}

\normalsize

\vspace{-0,3cm}

\section{Example}

    The archive {\tt paradiseo\_practices\_0208.tgz} installed
    on your computer contains a simulated annealing implemented using ParadisEO-MO~
    (see {\tt simulated\_annealing} in the {\bf build/lesson4} directory).

    \medskip
    To run it, please go in {\bf build/lesson4} and start the program {\tt simulated\_annealing} by giving
    one of the TSP instances located in {\bf tsp/benchs}.


    \medskip
    When entering {\tt ./simulated\_annealing ../../tsp/benchs/berlin52.tsp}, you should end up with the
    following outputs:

    \smallskip
    \noindent
    \texttt{>> Loading [../tsp/benchs/berlin52.tsp]}\\
    \texttt{[From] -29414  52 1 20 40 48 9 27 13 22 5 28 24 29 21 26 44 38 33 37 45 31 42 18 12 3 14}\\
    \texttt{36 30 6 51 32 17 11 0 34 4 10 4350 16 2 23 35 19 46 49 39 25 15 41 8 7 47}\\
    \texttt{[To] -8724  52 1 6 41 29 22 19 49 15 28 46 13 51 12 25 26 27 11 10 50 32 42 9 8 7 40 18}\\
    \texttt{44 2 16 20 30 17 21 0 31 48 35 3438 39 37 36 33 43 45 24 3 5 4 14 23
    47} \\

    The printed-out results show for the initial best solution and the final one~:
    \\ \hspace*{1cm}-the length of the route
    \\ \hspace*{1cm}-the number of cities
    \\ \hspace*{1cm}-the route itself (notice that the city index starts from 0).


\section{Study the simulated annealing dedicated components}

    Study the {\tt simulated\_annealing.cpp} file located in the {\bf lesson4} directory
    using~:
    \begin{itemize}
       \item[$\bullet$] the ParadisEO-MO API documentation available at~:

       \hspace{1cm}http$\,:$//paradiseo.gforge.inria.fr/addon/paradiseo-mo/doc/index.html
       \item[$\bullet$] the source files located in the {\bf tsp/src/} directory
    \end{itemize}

\section{Customize the simulated annealing}

   Make a backup (copy) of the cpp file {\tt simulated\_annealing.cpp}. You can now modify the
   original {\tt simulated\_annealing.cpp} and use the existing makefiles to compile it.

     Edit and modify the {\tt simulated\_annealing.cpp} file~:
    \begin{itemize}
       \item[$\bullet$] Change the cooling schedule components and parameters.
       \item[$\bullet$] Customize the temperature decrease process and try to obtain another good solution.
    \end{itemize}

    \smallskip
    To compile {\tt simulated\_annealing.cpp},you should use the
    command {\tt make} from {\bf build/lesson4}.

    \medskip
    Finally, test your modifications on several TSP instances ({\tt berlin52},
    {\tt eil101} ...) and compare the results you get.


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