. Puis, La méthode a ´ eté illustrée par un exemple Un exemple plus complet pour valider la méthode est proposé au chapitre 8. 1. La description de liste des variables. L'utilisateur peut spécifier une variable et sélectionner son type parmi la liste des concepts de l'ontologie. La partie SELECT de la requête est automatiquement complétée et un triplet qui indique le type de variable estégalementestégalement ajouté, Par exemple, pour une variable x associée au concept person, la variable ?x est ajoutée dans la partie SELECT et le triplet ?x a person est ajouté dans la partie WHERE

. De-façon-optionnelle, 1 Implémentation de l'outil de visualisation Un outil de visualisation a ´ eté réalisé afin d'implémenter l'approche SEVI (chapitre 7) dans le cadre de l'architecture OWSCIS. Il se compose de deux parties : visualisation en 2D et une visualisation en 3D. L'outil de visualisation a ´ eté implémenté en Java, il utilise la bibliothèque Jena [CDD + 04]. Jena 11 est une bibliothèque de classes Java qui facilite le développement d'applications pour le web sémantique. Jena est utilisée au niveau de l'application pour parcourir toute une ontologie et charger au fur etàet`età mesure lesélémentsleséléments dans un graphe. On utilise principalement les classes FRLayout, CircleLayout, ISOMLayout, KKLayout et StaticLayout afin de positionner leséléments leséléments 12 . La visualisation en 3D repose principalement sur Java.awt.Component afin de créer les différents composants de l'interface utilisateur et interagir avec ce dernier. La bibliothèque de programmation graphique JOGL [CW06] est utilisée 13, eté réalisé avec la participation desétudiantsdesétudiants Simon Julienne et Bruno Lanaud du Master pro Bases de Données et Intelligence Artificielle

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