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GIS
1999
ACM
15 years 2 months ago
1999
ACM
An important activity in the design of a particular database application consists in identifying the integrity constraints that must hold on the database, and that are used to det...
GIS
1999
ACM
15 years 2 months ago
1999
ACM
: The paper is concerned with the effective and efficient processing of spatiotemporal selection queries under varying degrees of approximation. Such queries may employ operators l...
GIS
1999
ACM
15 years 2 months ago
1999
ACM
The GeoWorlds system integrates geographic information systems, spatial digital libraries and other information analysis, retrieval and collaboration tools. It supports multiple a...
GIS
1998
ACM
15 years 2 months ago
1998
ACM
We apply an advancing front technique to the problem of simplification of dense digitized terrain models. While most simplification algorithms have been based on either incrementa...
COSIT
1997
Springer
15 years 2 months ago
1997
Springer
It is well-known that route distance estimates are influenced by the structure of the route. In particular, the number of features along the route (e.g. landmarks) and the structu...