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Dr.Richard Hull 学术报告通知

Towards a Unified Framework for the Study of Web Services Composition 演讲人:Dr. Richard Hull (Director of Network Data and Services Research Bell Laboratories, Lucent Technologies)

主要内容
时间 2005-12-13
起始时间 14:00 结束时间 18:00
地点 计算所359会议室
参与人员 Dr. Richard Hull
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Abstraction:

The web services paradigm, which finds roots in Service-Oriented Computing, promises to enable rich, flexible, and dynamic interoperation of highly distributed and heterogeneous web-hosted services. Substantial progress has already been made towards this goal, through emerging standards (such as SOAP, WSDL, BPEL), industrial products, and theoretical explorations.

A key long-term research challenge in web services concerns (semi-)automatic discovery and composition of web services, in order to construct new web services with desired properties or capabilities. Previous foundational work in the area has centered on three models of web services, each focused on different aspects, these being messaging (Conversation model), internal process model ("Roman" model), and impact on the external world (OWL-S).

This talk describes recent efforts to develop a framework that can synthesize the three models and results obtained for them. The first effort is the development of a First-order Logic Ontology for Web Services (FLOWS), which forms part of a recent member submission to W3C by the Semantic Web Services Framework (SWSF). Building on the ISO-standard Process Specification Language (PSL), FLOWS combines key aspects of the three models mentioned above, and can serve as a basis for studying and comparing alternative models for web services. The second effort is the development of the Colombo model, which can be viewed as a specialization of FLOWS. Decision procedures have been developed for performing automatic composition of web services in the Colombo model.

Dr. Richard Hull is Director of Network Data and Services Research at Bell Laboratories, a division of Lucent Technologies. Hull has broad research interests in the areas of data and information management, including web and converged services. Hull is co-author of the book "Foundations of Databases" (Addison-Wesley), has published over 100 journal and conference articles, and has presented invited key-note talks at conferences such as the Intl. Conf. on Web Services (ICWS), Intl. Symp. on Principles of Databases (PODS), and Extending Database Technologies (EDBT). Before joining Bell Labs he served on the faculty of Computer Science at the University of Southern California, and was supported in part by grants from NSF, DARPA, and AT&T.

Hull's current research is focused on pervasive computing, personalization, and web services. In recent years he has been instrumental in developing and transferring new technologies into Lucent's product line, including a policy engine and a data integration tool. He has led the creation of Lucent's Privacy Conscious Personalization (PCP) framework, which can support context-aware, preferences-driven, requester-targeted decisions so that services and feature interactions can be highly personalized. In the web services area he has been active with the Semantic Web Services Framework (SWSF) consortium, and has developed foundational results on automated web services composition. Further details at: http://www-db.research.bell-labs.com/user/hull/

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