{"id":236,"date":"2011-09-30T10:38:51","date_gmt":"2011-09-30T08:38:51","guid":{"rendered":"https:\/\/samovar2022.int-evry.fr\/index.php\/2011\/09\/30\/soutenance-these-de-mohamed-sellami\/"},"modified":"2020-09-04T18:47:00","modified_gmt":"2020-09-04T16:47:00","slug":"soutenance-these-de-mohamed-sellami","status":"publish","type":"post","link":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/2011\/09\/30\/soutenance-these-de-mohamed-sellami\/","title":{"rendered":"SOUTENANCE : Th\u00e8se de Mohamed Sellami"},"content":{"rendered":"

Mardi 18 Octobre<\/strong> 2011 \u00e0 14<\/strong>h00 salle C06. \u00ab\u00a0D\u00e9couverte d’annuaires de services Web dans un environnement distribu\u00e9\u00a0\u00bb<\/strong><\/p>\n

Jury<\/strong><\/p>\n

– Prof. Abdelkader Hameurlain, Professeur \u00e0 l’Universit\u00e9 Paul Sabatier – IRIT, Rapporteur.
\n– Dr. Philippe Lamarre, Ma\u00eetre de conf\u00e9rences (HDR) \u00e0 l’Universit\u00e9 de Nantes – LINA, Rapporteur.
\n– Prof. Chihab Hanachi, Professeur \u00e0 l’Universit\u00e9 Toulouse 1- IRIT, Examinateur.
\n– Prof. Bruno Defude, Professeur \u00e0 T\u00e9l\u00e9com SudParis- SAMOVAR, Examinateur.
\n– Dr. Walid Gaaloul, Ma\u00eetre de conf\u00e9rences \u00e0 T\u00e9l\u00e9com SudParis – SAMOVAR, Encadrant.
\n– Prof. Samir Tata, Professeur \u00e0 T\u00e9l\u00e9com SudParis – SAMOVAR, Directeur de Th\u00e8se.<\/p>\n

R\u00e9sum\u00e9<\/strong><\/p>\n

\u00ab\u00a0Les services Web (SW) sont consid\u00e9r\u00e9s comme \u00e9tant un bloc pilier pour la r\u00e9alisation de transactions \u00e9lectroniques entre entreprises (B2B). Ainsi, de plus en plus d’entreprises utilisent des SW pour r\u00e9aliser des transactions avec leurs partenaires et\/ou offrir des services en ligne. Dans un tel contexte, chaque entreprise poss\u00e8de un ou plusieurs r\u00e9f\u00e9rentiels priv\u00e9s de descriptions de SW. Pour que ses SW soient consultables et puissent \u00eatre d\u00e9couverts par d’autres entreprises, une entreprise devra rendre ses r\u00e9f\u00e9rentiels de SW publics. La solution couramment utilis\u00e9e consiste \u00e0 publier les descriptions de ses SW dans des annuaires de SW. En cons\u00e9quence, le nombre d’annuaires disponibles peut \u00eatre aussi important que le grand nombre d’entreprises et la d\u00e9couverte d’un SW devient ainsi une t\u00e2che fastidieuse pour un demandeur de services et co\u00fbteuse pour un syst\u00e8me de d\u00e9couverte.<\/p>\n

L’objectif principal de cette th\u00e8se est de fournir des solutions pour assurer une d\u00e9couverte d’annuaires de SW adapt\u00e9e \u00e0 un environnement distribu\u00e9. Pour ce faire, nous proposons tout d’abord d’organiser le r\u00e9seau d’annuaires en communaut\u00e9s. Nous utilisons comme crit\u00e8re d’organisation les fonctionnalit\u00e9s offertes par les SW annonc\u00e9s par chaque annuaire. Ensuite, afin de pr\u00e9server la consistance de cette organisation en communaut\u00e9s face aux changements qui peuvent se produire (d\u00e9part\/arriv\u00e9e d’annuaires), nous d\u00e9finissons les m\u00e9canismes de gestion n\u00e9cessaires. Ainsi, nous avons identifi\u00e9 les diff\u00e9rents \u00e9v\u00e9nements qui peuvent se produire et induire une inconsistance au niveau de notre organisation et nous avons d\u00e9fini les m\u00e9canismes de gestion ad\u00e9quats. Enfin, nous proposons une approche pour la d\u00e9couverte d’annuaires de SW qui utilise deux filtres pour limiter l’espace de recherche d’un demandeur de services. Le premier filtre consiste \u00e0 utiliser les besoins fonctionnels d’un demandeur de services pour s\u00e9lectionner la communaut\u00e9 d’annuaires ad\u00e9quate. Le deuxi\u00e8me filtre consiste \u00e0 utiliser les besoins non-fonctionnels et la trace des services d\u00e9j\u00e0 utilis\u00e9s par le demandeur de services pour s\u00e9lectionner un ou plusieurs annuaires. La s\u00e9lection d’un annuaire au sein d’une communaut\u00e9 est bas\u00e9e sur une technique de recommandation. Les solutions propos\u00e9es ont \u00e9t\u00e9 test\u00e9es par la mise en place d’un r\u00e9seau de communaut\u00e9s d’annuaires, l’impl\u00e9mentation d’un gestionnaire de communaut\u00e9s et d’un syst\u00e8me de d\u00e9couverte d’annuaires.\u00a0\u00bb<\/p>\n

\n","protected":false},"excerpt":{"rendered":"

Mardi 18 Octobre 2011 \u00e0 14h00 salle C06. \u00ab\u00a0D\u00e9couverte d’annuaires de services Web dans un environnement distribu\u00e9\u00a0\u00bb Jury – Prof. Abdelkader Hameurlain, Professeur \u00e0 l’Universit\u00e9 Paul Sabatier – IRIT, Rapporteur. – Dr. Philippe Lamarre, Ma\u00eetre de conf\u00e9rences (HDR) \u00e0 l’Universit\u00e9 de Nantes – LINA, Rapporteur. – Prof. Chihab Hanachi, Professeur \u00e0 l’Universit\u00e9 Toulouse 1- IRIT, 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