Using a Private Uddi for Publishing Location-Based Information to Mobile Users
||Helder Pinto, Rui José and Noé, Vilas Boas
||Using a Private Uddi for Publishing Location-Based Information to Mobile Users
||ELPUB2003. From information to knowledge: Proceedings of the 7th ICCC/IFIP International Conference on Electronic Publishing held at the Universidade do Minho, Portugal 25-28 June 2003/Edited by: Sely Maria de Souza Costa, João Álvaro Carvalho, Ana Alice Baptista, Ana Cristina Santos Moreira. Universidade do Minho, 2003.
||This paper describes our experience with the use of Universal Description, Discovery and Integration (UDDI) technology for supporting location-based service discovery. Our goal is to allow Web Services to be associated with physical locations and then queried according to spatial criteria. This would enable location-based applications to use local UDDI registries todiscover the Web Services that are relevant for the current location of a mobile user. However, the current model for Web Services discovery in UDDI does not directly support the particular requirements of location-based discovery. The main limitation is the inadequacy of the query-processing mechanism, based on exact matching between query criteria and servicecategorizations, to support discovery models based on proximity. We propose an approach that includes a space model that allows external entities to obtain information about the spatial structure of the local environment, a set of querying taxonomies that allow UDDI queries to include spatial criteria while maintaining conformance with the UDDI standards, and a proxy that allows application to benefit from spatial queries while maintaining the approach transparent. This approach iscurrently being used and evaluated in the VADE project.
||Web Services; location-based information; mobile computing; service discovery; info-mobility; UDDI
||file.pdf (285,258 bytes)
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