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\textbf{ParadisEO Practices}  {\copyright Franck Seynhaeve,
Jean-Charles Boisson, Thomas Legrand} \Large{\textbf{\\\\
Lesson 2: Implement a Hill-Climbing using ParadisEO}}

\normalsize

\vspace{-0,3cm}

\section{Example}

    The archive {\tt paradiseo\_practices\_0208.tgz} installed
    on your computer contains a Hill-Climbing implemented using ParadisEO-MO~
    (see {\tt hill\_climbing} in the {\bf build/lesson2} directory).

    \medskip
    To run it, please go in {\bf build/lesson2} and start the program {\tt hill\_climbing} by giving
    one of the TSP instances located in {\bf tsp/benchs}.


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

    \smallskip
    \noindent
    \texttt{>> Loading [../../tsp/benchs/eil101.tsp]} \\
    \texttt{[From] -3435  101 36 55 54 65 50 80 14 27 46 15 93 58 78 47 99 64 68}\\
    \texttt{49 72 81 82 76 41 16 66 30 29 83 95 71 38 35 19 5 63 26 43 96 79 52}\\
    \texttt{59 69 7 56 37 3 32 28 9 13 1 91 31 73 11 40 62 17 24 45 88 6 85 22}\\
    \texttt{18 20 44 94 12 33 60 89 74 42 97 21 100 57 77 92 98 51 2 25 75 10 86}\\
    \texttt{8 23 67 70 34 90 87 48 53 0 39 4 84 61}\\
    \texttt{[To] -708  101 36 97 91 58 95}\\
    \texttt{98 92 84 99 90 43 13 37 85 15 60 16 83 4 59 82 44 7 45 35 48 63 10}\\
    \texttt{18 46 47 81 17 51 26 27 25 39 57 52 100 88 5 93 94 12 1 56 86 96 41}\\
    \texttt{42 14 40 21 73 71 72 20 3 55 74 22 66 38 24 54 53 23 28 78 2 76 67}\\
    \texttt{79 11 75 68 0 49 32 80 77 33 50 8 34 70 64 65 19 29 69 31 89 62 9 30}\\
    \texttt{87 6 61}\\

    The printed-out results show for the initial best solution and the final one~:
    \\ \hspace*{0.5cm}-the length of the route
    \\ \hspace*{0.5cm}-the number of cities
    \\ \hspace*{0.5cm}-the route itself (notice that the city index starts from 0).


\section{Tabu search}

    Study the {\tt hill\_climbing.cpp} file located in the {\bf lesson2} 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 Hill CLimbing}

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

     Edit and modify the {\tt hill\_climbing.cpp} file~:
    \begin{itemize}
       \item[$\bullet$] Try to tune a few parameters (random seed
       and the move selector) and observe the changes on the final
       solution.

    \end{itemize}

    \smallskip
    To compile {\tt hill\_climbing.cpp}, you should use the
    command {\tt make} from {\bf build/lesson2}.

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


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