Semantic Web Enabled Web Services

Journal of Network and …, 2009

International Journal of Computer Applications, 2010

International Journal, 2011

Abstract-One of the major issues of semantic web is the discovery and identification of the best service that responds to a user request. In this article we specify a semantic web services composition model built through an ontology described in the logical description ...

IEEE Expert / IEEE Intelligent Systems, 2003

Handbook of Semantic …, 2010

In recent years service-orientation has increasingly been adopted as one of the main approaches for developing complex distributed systems out of reusable components called services. Realizing the potential benefits of this software engineering approach requires semi-automated and automated techniques and tools for searching or locating services, selecting the suitable ones, composing them into complex processes, resolving heterogeneity issues through process and data mediation, and reduce other tedious yet recurrent tasks with minimal manual effort. Just as semantics has brought significant benefits to search, integration and analysis of data, semantics is also seen as a key to achieving a greater level of automation to service orientation. This has lead to research and development, as well as standardization efforts on semantic Web services. Activities related to semantic Web services have involved developing conceptual models or ontologies, algorithms and engines that could support machines in semi-automatically or automatically discovering, selecting, composing, orchestrating, mediating and executing services. This chapter provides an overview of the area after nearly a decade of research. The main principles and conceptual models proposed thus far including OWL-S, WSMO, and SAWSDL/METEOR-S. The main approaches developed by the research community that are able to use these semantic descriptions of services to support some of the typical activities related to services and service-based applications are described. Next, the ideas and techniques described through two applications that integrate semantic Web services technologies within real-world application are illustrated. Finally, a set of key resources is provided that would allow the reader to reach a greater understanding of the field, and are the main issues that will drive the future of semantic Web services.

iadis.net

In this paper, we present a semantic web services composition framework based on a distributed architecture and on semantic and uniform based-ontology service descriptions. Central to our framework is the use of the concept of community of services. This concept provides means to describe services with the same language based on the community ontology. Thus, the community constitutes a unified, a homogeneous and a consistent access interface to existing and heterogeneous e-services which propose similar functionalities for services belonging to this community. Moreover, based on OWL-S language, our framework supports a rich expressivity in services and user constraints descriptions, and takes into account the nondeterministic behaviors of e-services instances, in particular when their internal state cannot be predicted a priori.

Web services are becoming the most predominant paradigm for distributed computing and electronic business. They are self-contained Internet accessible applications that are capable not only of performing business activities on their own, but they also possess the ability to engage with other Web services in order to build new value-added services. Both academic and industrial bodies have been investigating issues regarding service descriptions, discovery and invocation, but automated service composition was somewhat neglected. The latter involves automated methods for constructing a sequence of Web services to achieve a desired goal. In this work we present initial research that focuses on the issue of automated service composition in conjunction with the Semantic Web. In this report we propose a composition engine that will automatically handle the integration of Web services through the use of a Web service description language such as DAML-S, the planning of workflow definitions, scheduling of tasks, status monitoring of the execution process, handling of faults and communication with other entities such as user agents, service registries and other composition engines.

… Resource Retrieval in …, 2007

Semantic Web Services are a research effort to automate the usage of Web services, a necessary component for the Semantic Web. Traditionally, Web service discovery depends on detailed formal semantic descriptions of available services. Since a complete detailed service description is not always feasible, the client software cannot select the best service offer for a given user goal only by using the static service descriptions. Therefore the client needs to interact automatically with the discovered Web services to find information about the available concrete offers, after which it can select the best offer that will fulfill the user's goal. This paper shows when and why complete semantic description is unfeasible, it defines the role and position of offer discovery, and it suggests how it can be implemented and evaluated.

Proceedings of the …, 2002

IEEE Internet Computing, 2005