An Ontology-Based Approach to Personalized Situation-Aware Mobile Service Supply |
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Authors: | Norbert Weißenberg Rüdiger Gartmann Agnès Voisard |
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Affiliation: | (1) Fraunhofer ISST, P.O. Box 52 01 30, 44207 Dortmund, Germany;(2) Fraunhofer ISST and FU Berlin, Mollstr. 1, 10178 Berlin, Germany |
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Abstract: | Mobile devices such as personal digital assistants (PDAs) and mobile phones are in widespread use already today and converging
to mobile smart phones. They enable users to access a wide range of services and information without guidance through their
actual demands. Especially during mass events like the Olympic Games 2008 in Beijing—which was initially the context of our
work—a large service space is expected to support all mobile visitors, being athletes, journalists, or spectators. Current
approaches tackling such problems are location based, meaning that a user's location is central to service provision, and even context-aware, meaning that, beyond location, characteristics of a user's environment are taken into account. Such information obviously
helps to deliver relevant information at the right time to the mobile users. Going one step further, a situation-aware system abstracts from the context dimensions by translating specific contexts into logical situations. Knowing the situation
end users are in allows the system to better identify the information to be delivered to them and to choose the appropriate
services with regard to their scope, which is referred to as service roaming. Even though many context frameworks have been
introduced in the past few years, what is usually missing is the notion of characteristic features of contexts that are invariant during certain time intervals. This paper presents these concepts in the context of a platform
development, namely FLAME2008, which is able to support its mobile users with personalized situation-aware services in push
and pull mode. |
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Keywords: | mobile application ontology user profile context service roaming |
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