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A Dynamic Service Supporting Model for Semantic Web-based Situation Awareness Service  

Choi, Jung-Hwa (숭실대학교 컴퓨터학과)
Park, Young-Tack (숭실대학교 컴퓨터학과)
Publication Information
Journal of KIISE:Software and Applications / v.36, no.9, 2009 , pp. 732-748 More about this Journal
Abstract
The technology of Semantic Web realizes the base technology for context-awareness that creates new services by dynamically and flexibly combining various resources (people, concepts, etc). According to the realization of ubiquitous computing technology, many researchers are currently working for the embodiment of web service. However, most studies of them bring about the only predefined results those are limited to the initial description by service designer. In this paper, we propose a new service supporting model to provide an automatic method for plan related tasks which achieve goal state from initial state. The inputs on an planner are intial and goal descriptions which are mapped to the current situation and to the user request respectively. The idea of the method is to infer context from world model by DL-based ontology reasoning using OWL domain ontology. The context guide services to be loaded into planner. Then, the planner searches and plans at least one service to satisfy the goal state from initial state. This is STRIPS-style backward planner, and combine OWL-S services based on AI planning theory that enabling reduced search scope of huge web-service space. Also, when feasible service do not find using pattern matching, we give user alternative services through DL-based semantic searching. The experimental result demonstrates a new possibility for realizing dynamic service modeler, compared to OWLS-XPlan, which has been known as an effective application for service composition.
Keywords
Web Service; Planning; Service Composition; Ontology; Situation Awareness; Context;
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