980 search results - page 74 / 196 » GIS |
156
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SAC
2008
ACM
15 years 4 months ago
2008
ACM
We address aggregate queries over GIS data and moving object data, where non-spatial information is stored in a data warehouse. We propose a formal data model and query language t...
239
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GIS
2010
ACM
15 years 3 months ago
2010
ACM
In this paper, we aim to estimate the similarity between users according to their GPS trajectories. Our approach first models a user’s GPS trajectories with a semantic location ...
181
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GIS
2010
ACM
15 years 3 months ago
2010
ACM
We describe and demonstrate CBGIR, a web-based system for performing content-based image retrieval in large sets of high-resolution overhead images. The system provides a familiar...
162
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GIS
2010
ACM
15 years 3 months ago
2010
ACM
Many Web sites support keyword search on their spatial data, such as business listings and photos. In these systems, inconsistencies and errors can exist in both queries and the d...
155
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GIS
2010
ACM
15 years 3 months ago
2010
ACM
Recently, a wide range of applications like hurricane research, fire management, navigation systems, and transportation, to name only a few, has shown increasing interest in mana...