Semantic Services Support for Context-Aware Platforms


Bonino da Silva Santos, L.O. (2004) Semantic Services Support for Context-Aware Platforms. [Masters Thesis]

open access
Abstract:Context awareness allows computer applications to use information beyond those directly provided as input by users. This facilitates the use of these applications by minimizing user intervention, and increases applications independency in gathering and processing relevant information, because, additionally to direct user inputs, the systems can, transparently, obtain contextual information from providers and/or sensors. Middleware infrastructure is an essential aspect to be considered when implementing distributed context-aware systems. For this reason, Web Services technology has been considered as a choice to implement distributed context-aware services platforms in the Web domain. The continuous search for reliable and large-scale interoperation of Web Services raised the necessity to make services’ properties, capabilities, interfaces and effects machine-understandable. Bringing meaning to the Web is the main purpose of the so-called Semantic Web initiative allowing a machine to read and “understand” web content. This thesis proposes an extension architecture design for the WASP (Web Architectures for Services Platforms) platform – a context-aware services platform developed at the University of Twente, The Netherlands – to support the platform interaction with Semantic Web Services. The extended WASP provides capabilities to publish, discover, select, compose, execute and monitor semantic services. A distinctive characteristic of our architectural extension is the use of task ontologies – a high level model of how a task can be performed – to achieve automated service selection and composition.
Item Type:Masters Thesis
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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