CooPS - Towards a method for coordinating personalized services

This paper presents CooPS, which is a method for Coordinating Personalized Services. These services are primarily offered to mobile users. The concept of services is the object of intense investigations from both academia and industry. However, very little has been accomplished so far regarding first, personalizing services for the benefit of mobile users, and second, providing the appropriate methodological support for those (i.e., designers) who will be specifying the operations of personalization. Various obstacles still exist such as lack of techniques for modeling and specifying the integration of personalization into services, and existing approaches for service composition typically facilitate orchestration only, while neglecting contexts of users and services. CooPS consists of several steps ranging from service definition and personalization to service deployment. Each step has some representation techniques, which aim at facilitating the specification and validation of the operations of coordinating personalized services. © Springer-Verlag 2006

SEKE - Towards Context-based Mediation for Semantic Web Services Composition

Web services composition is a keystone towards the development of interoperable systems. However, desp; ite several efforts for explicit semantic description, Web services still face data-heterogeneity chal; lenges. Correct interpretation of data exchanged between composed Web services is hampered by differen; t implicit modeling assumptions and representations. In this paper, we demonstrate the importance of c; ontext to facilitate data exchange, and describe a context representation model for Web services. Then; , we present a context-based mediation architecture that helps performing meaningful composition

Context and semantic composition of Web services

Composition of Web services is a cornerstone step in the development of interoperable systems. However, Web services still face data-heterogeneity challenges, although several attempts of using semantics. In addition, the context in which Web services evolve is still somehow ignored , hampering their adaptability to changes in composition situations. In this paper, we argue how context permits to determine the semantics of interfaces that Web services expose to third parties. We show the need for a context- and semantic-based approach for Web services composition. © Springer-Verlag Berlin Heidelberg 2006

A Mediation Framework for Web Services in a Distributed Healthcare Information System

Conceptualizing distributed Healthcare Information System is an important step toward the enhancement of clinical decision support system. In this paper, we propose a semantic mediation of Web Services interfaces for distributed healthcare system. Our proposal is an approach based on Web Services technology and their mediation in a Peer to Peer environment. This approach constitutes the foundation for the set-up of a mediation framework built around the JXTA P2P architecture applied to cardiology domain in collaboration with the National Institute of Health and Medical Research (INSER ERM 107). To achieve our goal, we used the OWL-S language as a means of describing semantics of Web Services interfaces, and the JXTA distributed architecture. © 2005 IEEE

Views in composite Web services

The authors present a view-based approach for tracking personalized Web services. To guarantee proper handling of user preferences during Web service execution, a view can zoom into the specification that composes the Web services. As time advances, the location changes, or constraints on the environment are satisfied, the deployment of a view over a specification similarly progresses, mirroring the context\u27s dynamic nature. © 2005 IEEE

A mediation framework for web services in a peer-to-peer environment

Centralized architectures based on the client server paradigm show their limits each time the Internet extends its capabilities. They present problems in terms of security, robustness, performance, high needs for administration. Short time solutions like load balancing and replication, or purchasing of more powerful hardware tend to cope with these limits for a while, but do not provide a definitive answer to these problems. Currently, different proprietary approaches hinder attempts to enabling communication between heterogeneous systems, while the Internet is developing toward a better interoperability with service-oriented architectures. Recent open source and standardization efforts allow building a framework providing an original answer to interoperability and scalability over the Internet. The use of Web Services (WS) as a means of communication between information systems, combined with a Peer-to-Peer (P2P) architecture for a more reliable network resources repartition and decentralization, forms a stable base for a new kind of distributed architecture. Furthermore, the composition and aggregation of multiple WS allow providers to supply with large scale meta-services. However, the use of heterogeneous WS in a dynamic context like P2P still faces challenges concerning the matching of WS and their respective interfaces. This paper discusses the use of mediation as an alternative to deal with the constant evolution of Web Services availability, and proposes a framework for a WS-enabled P2P platform. © 2005 IEEE

How to Enhance Privacy within DaaS service Composition?

12p.International audienceThe composition of DaaS (Data-as-a-Service) services is a powerful solution for building value-added applications on top of existing ones. However, privacy concerns are still among the key challenges that keep hampering DaaS composition. Indeed services may follow different, conflicting privacy specifications with respect to the data they use and provide. In this paper, we propose an approach for privacyaware composition of DaaS services. Our approach allows specifying privacy requirements and policies and verifying the compatibility of services involved in a composition. We propose an adaptation protocol that makes it possible to reconcile the privacy specifications of services when incompatibilities arise in a composition. We validate the applicability of our proposal through a set of experiments

Semantic Web Services Composition in the astrophysics domain: Issues and solutions

© 2018 Elsevier B.V. Semantic Web services (SWS) have been hailed for their role in realizing the potential of composing services in the context of service-oriented computing. However, many application domains, such as astrophysics, require a major rethinking of how service composition should take place despite his potential. In this paper, we describe an approach for automatic, user-friendly SWS composition for the astrophysics domain that features certain particularities like correlated or optional inputs, aggregates, and inclusion of non-Web services. The approach selects the best SWSs using non-functional requirements along with users’ previous experience feedback and is demonstrated using some real astrophysics services