3773 search results - page 480 / 755 » Using Ontologies for Integrated Geographic Information Syste... |
291
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ICOODB
2010
15 years 4 months ago
2010
Abstract. We present the data modeling concepts of Tricia, an opensource Java platform used to implement enterprise web information systems as well as social software solutions inc...
163
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WWW
2001
ACM
16 years 7 months ago
2001
ACM
Integrity constraints are an essential part of a modern schema definition language. They are useful for semantic specification, update consistency control, query optimization, inf...
229
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ICC
2007
IEEE
16 years 1 months ago
2007
IEEE
—This paper addresses context issues in pervasive mobile computing and presents a semantic context model to support location based cooperative mobile applications. In this paper,...
161
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GIS
2009
ACM
15 years 11 months ago
2009
ACM
Apart from visualization tasks, three-dimensional (3D) data management features are not or only hardly available in current spatial database systems and Geographic Information Sys...
200
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WWW
2006
ACM
16 years 7 months ago
2006
ACM
Social networks play important roles in the Semantic Web: knowledge management, information retrieval, ubiquitous computing, and so on. We propose a social network extraction syst...