SEMINARIOS EN INGENIERÍA INFORMÁTICA Y DE
TELECOMUNICACIÓN 2006-2007
Doctorado en Ingeniería
Informática y de
Telecomunicación
Programa Oficial de Posgrado en Ingeniería
Informática y de Telecomunicación
Escuela Politécnica Superior, Universidad Autónoma de
Madrid
25 de Junio de 2006, 12:00
Salón de Grados, Escuela Politécnica Superior,
Universidad Autónoma de Madrid
A flexible model for the semi-automatic location of services
Abstract
The exposition of functionalities provided by heterogeneous and possibly distributed systems as reusable, platform-independent, interoperable, and meaningful (from a business point of view) services is the pillar of SOA; existing and new pieces of functionality are given visibility and exposed so that they can be seamlessly accessed by other parties. SOA can enable a higher reuse of IT assets and their better integration into more complex services but, for services to be used, they must be first located. As SOA adoption increases and more services are available, the difficulty of locating an appropriate service for solving some particular need can become a bottleneck for the effective exploitation of services unless appropriate location mechanisms are in place.
Current service technologies rely on purely syntactic descriptions, which make service location mechanisms operating over such descriptions imprecise; as a result, they demand a strong manual intervention from users, which hampers an agile usage of services and, especially, the dynamic location of services at run-time. Therefore, an enhancement of current service location practices in order to enable the effective location of available services for their usage, either with the intervention of a human user or in a fully automatic manner, either inside an organization or specially if organizational boundaries are crossed to extend the possibilities of cooperation, is required.
In this work, we introduce an explicit conceptual model of services and goals, analyze the variety of usage scenarios in which the need for enhanced service location mechanisms beyond current practices arises, and propose an abstract model for the semi-automatic location of services. This model is designed with flexibility and usability as key principles so that it can be used to cover diverse usage scenarios in which different requirements might arise and in which users with different profiles might participate. Furthermore, an instantiation which concretizes aspects left open in the abstract model, such as the particular types of descriptions of goals and services considered and the matching mechanisms applied to them, is proposed, serving as a proof of concept of our approach and demonstrating the feasibility of enhancing current service location mechanisms.
presentación PDF
presentation
Rubén Lara Hernández
M.S. in computer science, Special Award in computer science by Universidad Autónoma de Madrid, and First National Award in computer science by the Spanish Ministry of Culture and Science (2001), Rubén Lara is currently R&D director at TIF, and he has previously worked at DERI Innsbruck as a researcher and as managing director of the Network of Excellence KnowledgeWeb. He has published several articles on semantic web services and semantic information integration in international journals and conferences and he has co-authored the book “Information integration with ontologies: experiences from an industrial showcase.