Due to advancements in mobile technology and connectivity, mobile devices have become fully-fledged web clients. At the same time, more and more Semantic Web data is becoming available, to a point where it becomes usable for various mobile application scenarios. However, most applications are limited to using pre-defined query endpoints in order to access Semantic Web data, which leaves a huge part of the Semantic Web, consisting of online RDF files and semantically annotated websites, inaccessible. In this paper, we present a mobile query service for the efficient and transparent querying of large amounts of small online RDF sources. In order to achieve this, the query service relies on two key components: 1/ a lightweight semantics-based indexing scheme, to identify sources relevant to posed queries, and 2/ a caching mechanism that locally stores frequently-used data.
Van Woensel, W., Casteleyn, S., Paret, E., De Troyer, O.: Transparent Mobile Querying of Online RDF sources using Semantic Indexing and Caching. In: Bouguettaya, A., Hauswirth, M., and Liu, L. (eds.) Proceedings of the 12th International Conference on Web Information System Engineering. pp. 185–198. Springer-Verlag, Sydney, Australia (2011).
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