added practices to version control

git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@1002 331e1502-861f-0410-8da2-ba01fb791d7f
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legrand 2008-02-25 13:56:53 +00:00
commit 22c6962aa2
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######################################################################################
### 1) Include the sources
######################################################################################
INCLUDE_DIRECTORIES(${EO_SRC_DIR}/src)
INCLUDE_DIRECTORIES(${EO_SRC_DIR}/src/utils)
INCLUDE_DIRECTORIES(${MO_SRC_DIR}/src)
INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/tsp/src)
######################################################################################
######################################################################################
### 2) Specify where CMake can find the libraries
######################################################################################
LINK_DIRECTORIES(${EO_BIN_DIR}/lib ${CMAKE_BINARY_DIR}/tsp/src)
######################################################################################
######################################################################################
### 3) Define your target(s): just an executable here
######################################################################################
ADD_EXECUTABLE(gen_algo gen_algo.cpp)
ADD_DEPENDENCIES(gen_algo tsp)
######################################################################################
######################################################################################
### 4) Link the librairies for your target(s)
######################################################################################
TARGET_LINK_LIBRARIES(gen_algo tsp eo eoutils)
######################################################################################

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// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
// "gen_algo.cpp"
#include <eoEasyEA.h>
#include <eoGenContinue.h>
#include <eoStochTournamentSelect.h>
#include <eoSGATransform.h>
#include <eoSelectNumber.h>
#include "graph.h"
#include "route.h"
#include "route_init.h"
#include "route_eval.h"
#include "order_xover.h"
#include "partial_mapped_xover.h"
#include "city_swap.h"
int main (int __argc, char * __argv []) {
if (__argc != 2) {
std :: cerr << "Usage : ./gen_algo [instance]" << std :: endl ;
return 1 ;
}
Graph :: load (__argv [1]) ; // Instance
RouteInit init ; // Sol. Random Init.
RouteEval full_eval ; // Full Evaluator
eoPop <Route> pop (100, init) ; // Population
apply <Route> (full_eval, pop) ;
std :: cout << "[From] " << pop.best_element () << std :: endl ;
eoGenContinue <Route> cont (1000) ; /* Continuator (A fixed number of
1000 iterations */
eoStochTournamentSelect <Route> select_one ; // Selector
eoSelectNumber <Route> select (select_one, 100) ;
// OrderXover cross ; // Order Crossover
PartialMappedXover cross ;
CitySwap mut ; // City Swap Mutator
eoSGATransform <Route> transform (cross, 1, mut, 0.01) ;
eoElitism <Route> merge (1) ; // Use of Elistism
eoStochTournamentTruncate <Route> reduce (0.7) ; // Stoch. Replacement
eoEasyEA <Route> ea (cont, full_eval, select, transform, merge, reduce) ;
ea (pop) ;
std :: cout << "[To] " << pop.best_element () << std :: endl ;
return 0 ;
}

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\documentclass[a4paper]{article}
\usepackage[english]{babel}
\usepackage{epsf}
\usepackage{amssymb}
\usepackage{here}
\usepackage{comment}
\usepackage{graphicx}
\topmargin -2.5cm
\textheight 25,5cm
\textwidth 16cm
\oddsidemargin 0cm
\evensidemargin 0cm
\begin{document}
\textbf{ParadisEO Practices} {\copyright Franck Seynhaeve,
Jean-Charles Boisson, Thomas Legrand} \Large{\textbf{\\\\
Lesson 5: Implement a genetic algorithm using ParadisEO}}
\normalsize
\vspace{-0,3cm}
\section{Example}
The archive {\tt paradiseo\_practices\_0208.tgz} installed
on your computer contains a genetic algorithm implemented using ParadisEO-EO~
(see {\tt gen\_algo} in the {\bf build/lesson5} directory).
\medskip
To run it, please go in {\bf build/lesson5} and start the program {\tt gen\_algo} by giving
one of the TSP instances located in {\bf tsp/benchs}.
\medskip
When entering {\tt ./gen\_algo ../../tsp/benchs/berlin52.tsp}, you should end up with the
following outputs:
\smallskip
\noindent
\texttt{>> Loading [../tsp/benchs/berlin52.tsp]}\\
\texttt{[From] -26461 52 39 12 29 44 2 26 13 40 7 35 14 28 25 41 6 51 10 50 45 19 0 38 15}\\
\texttt{33 42 21 18 32 37 9 5 20 34 43 16 30 1 23 22 4 27 36 4946 47 48 11 17 8 31 24 3}\\
\texttt{STOP in eoGenContinue: Reached maximum number of generations [1000/1000]}\\
\texttt{[To] -13068 52 45 24 28 22 19 21 30 17 31 36 46 25 13 12 26 27 51 10 14 37 23 4 15 49}\\
\texttt{20 2 8 42 50 11 47 39 38 35 34 44 18 40 9 7 32 3 5 33 16 41 6 1 29 0 48
43} \\
\medskip
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 genetic algorithm dedicated components}
Study the {\tt gen\_algo.cpp} file located in the {\bf lesson5} directory
using~:
\begin{itemize}
\item[$\bullet$] the ParadisEO-EO API documentation available at~:
\hspace{1cm}http$\,:$//eodev.sourceforge.net/eo/doc/html/index.html
\item[$\bullet$] the source files located in the {\bf tsp/src/} directory
\end{itemize}
\section{Customize the GA}
Make a backup (copy) of the cpp file {\tt gen\_algo.cpp}. You can now modify the
original {\tt gen\_algo.cpp} and use the existing makefiles to compile it.
Edit and modify the {\tt gen\_algo.cpp} file~:
\begin{itemize}
\item[$\bullet$] Try to tune a few parameters of the GA
(selection criteria, stopping criteria ...).
\item[$\bullet$] Then, try to change the initialization of the population
by applying one of the local searches on each individual.
\end{itemize}
\smallskip
To compile {\tt gen\_algo.cpp},you should use the
command {\tt make} from {\bf build/lesson5}.
\medskip
Finally, test your modifications on several TSP instances ({\tt berlin52},
{\tt eil101} ...) and compare the results you get.
\end{document}