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Context Aware Systems (CAS) support mobility of users and make context reasoning efficiently to provide relevant and real-time information. CAS should be particularly adaptive and aware by managing and responding properly to occurring events. Due mainly to the presence of numerous sensors and access to several communication networks, Context-awareness has been successfully included in the mobile device...
Service Oriented Computing provides us with an opportunity to build distributed applications by invoking and selecting suitable services. In this paper we attempt to select context aware service and apply this to medical emergency scenario. This paper proposes an approach to select web services based on user context. Experimental results demonstrate that proposed method provides reliable solution...
Web service compositions run in changing environment where different context events can arise to affect the execution of services. In order not to make service execution affected by context events, context-aware service composition becomes one of the major research trends. Service providers can develop context-aware services which can adapt their behaviors dynamically to execution contexts. However,...
With the rapid development of Web 2.0 and its related technologies, more and more end-users start to participate in the development of World Wide Web. Yet, not enough attention from both academics and industries has been paid to allowing them to compose services to assist their daily work. This is mainly due to the lack of a high-level abstraction that defines what concepts, functions, and system...
After the vision of Mark Wieser, and the advent of 3G connection with a large number of mobile computing devices(PDAs, Smartphones, Tablet, etc.) that have democratized access to information anywhere, we live in a new era of ubiquity where a set of services are offered in our environments. In this work we try to review the conception, discovery and composition of these services called pervasive in...
An important challenge in pervasive computing environments is to automatically enable software applications by dynamically composing services. Service composition is a way to plan a business process to fulfill business goals that cannot be achieved by individual business services. Given a representation of services in OWL-S, service composition can be modeled as an Artificial Intelligence planning...
There have been several efforts to provide service-aware technologies in the networks, such as Service-Oriented Architecture (SOA) and Service Delivery Platform (SDP). These technologies were integrated with Service Overlay Network (SON) infrastructure to support control and delivery of services over multiple network domains. However, SON has the limitations of handling the increasing need of ubiquitous...
Two important aspects are associated with service composition. One is to understand the needs and constraints for a new added-value composite service, and otherwise it would lead to an ad-hoc effort for service composition. The second is to reflect the changes of computing environment to the service composition to catch up the on-demand of users. This paper introduces a goal-driven approach to specify...
Recently paradigms such as Service-Oriented and Pervasive Computing are merging in scenarios where users are surrounded by a plethora of computing devices and available services. Dealing with this potentially large number of devices and services can become overwhelming to users without appropriate software support. Moreover, in the case of non-technical users, an additional difficulty is to express...
Incorporating service composition and pervasive computing into managing user's complex everyday activities envisions the paradigm of pervasive service composition for everyday life. Context-aware pervasive service composition (CAPSC) enables a pervasive system to provide a user with service compositions that are relevant to the user's context. Moreover, CAPSC enables composition applications that...
Combining existing services to create new pervasive computing services involves special design considerations, including context awareness, contingency management, device heterogeneity, and user empowerment. Service composition is a natural concept around which to structure pervasive systems and individuate parts of them that are suitable for contingency management, application, storage, and so on...
Dynamic description logic (DDL) is among the few emerging service composition solutions through logical reasoning. To overcome low efficiency and lacking context-aware support of DDL reasoning, we propose a new DDL-based service composition model, which supports context-based service pre-filtering over DDL reasoning space. The pre-filtering runs under the BPEL workflow and a distributed reasoning...
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