235 search results - page 38 / 47 » Spatial Logics for Bigraphs |
OTM
2005
Springer
15 years 3 months ago
2005
Springer
We propose to enhance a schema integration process with a validation phase employing logic-based data models. In our methodology, we validate the source schemas against the data mo...
ICDAR
2003
IEEE
15 years 3 months ago
2003
IEEE
er presents an approach to deriving an abstract geometric model of a table from a physical representation. The technique developed uses a graph of constraints between cells which ...
166
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GIS
2004
ACM
15 years 11 months ago
2004
ACM
In the geometric data model [6], spatio-temporal data are modelled as a finite collection of triangles that are transformed by time-dependent affinities. To facilitate querying an...
145
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GIS
2006
ACM
15 years 11 months ago
2006
ACM
In the real world, lots of objects with changing position can be found. Some of them repeat the same movement several times, called periodic movements. Examples include airplanes,...
160
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VLDB
2004
ACM
15 years 10 months ago
2004
ACM
With the recent and continuing advances in areas such as wireless communications and positioning technologies, mobile, locationbased services are becoming possible. Such services ...