253 search results - page 38 / 51 » Spatial Data Integrity Constraints in Object Oriented Geogra... |
112
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ECCV
2010
Springer
15 years 3 months ago
2010
Springer
In this paper, we tackle the problem of object detection and tracking in a new and challenging domain of wide area surveillance. This problem poses several challenges: large camera...
104
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ICDM
2009
IEEE
15 years 6 months ago
2009
IEEE
—The real world is composed of sets of objects that move and morph in both space and time. Useful concepts can be defined in terms of the complex interactions between the multi-...
107
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APIN
2000
14 years 11 months ago
2000
Abstract. This paper addresses several issues related to the use of conceptual modeling to support serviceoriented, advanced information systems. It shows how conceptual modeling o...
GIS
2010
ACM
14 years 10 months ago
2010
ACM
With the prevalence of GPS-embedded mobile devices, enormous amounts of mobility data are being collected in the form of trajectory - a stream of (x,y,t) points. Such trajectories...
108
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DLOG
2008
15 years 2 months ago
2008
Answering queries posed over knowledge bases is a central problem in knowledge representation and database theory. In databases, query containment is one of the important query op...