S. Yu, S. Spaccapietra (Switzerland), N. Cullot and M.-A. Aufaure (France)
User profile, location-based services, ontologies, spatial temporal databases, query processing, information filtering and browsing.
: In this paper, we propose a user-profile based approach to improve the efficiency and precision of querying the spatio-temporal information in the location-based services. We put forward the domain & context-dependent ontologies to alleviate the semantic heterogeneity issues in information filtering and the personalized profile describing and suggest the multi-layered abstractions method to organize and present the data. We further explain how to refine and match the queries considering user preferences using a tourism scenario.
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