MAS 2011 Abstracts


Full Papers
Paper Nr: 1
Title:

A MULTI-AGENT SELECTION OF MULTIPLE COMPOSITE WEB SERVICES DRIVEN BY QOS

Authors:

Fatma Siala and Khaled Ghédira

Abstract: As the number of functionally similar Web Services from providers with different Quality of Service's (QoS) scores is increasing, a selection needs to be made to determine which services are to participate in a given composite service. Moreover, QoS becomes one of the most important factors for Web Service selection. Indeed, one of the main assets of service-orientation is a composition to develop higher level services, so-called composite services, by re-using existing services. However, for a composition, we can have different combinations and execution paths. Particularly, a composite service can generate different schemes that give various QoS scores. We propose, in this paper, two frameworks. The first framework deals with the selection of composite Web services on the base of Multi-Agents negotiation. The objective of these agents is to find out the best Composite QoS (CQoS) based on Web services availability. The second framework improves the first one by supporting different combinations and execution paths. The proposed Multi-Agents frameworks are compared to an existing approach in terms of execution time and QoS's score. Experiments have demonstrated that our frameworks provide reliable results in comparison with the existing approach.

Short Papers
Paper Nr: 3
Title:

A MAS TO MANAGE AND MONITOR SLA FOR CLOUD COMPUTING - A Draft Position Paper

Authors:

Benjamin Gâteau

Abstract: The More than a technological solution, the Cloud Computing is also an economical advantage and will play an important roles in next years. However, in order to ensure a QoS commitment between a provider and a customer, Service Level Agreements (SLA) describe a set of non-functional requirements of the service the customer is buying. SLA is the best way to ensure QoS. In this paper, we use a MAS to manage SLA by monitoring the respect of service in the context of Cloud Computing.