6 search results - page 1 / 2 » Topological Consistency for Collapse Operation in Multi-scal... |
ER
2005
Springer
13 years 10 months ago
2005
Springer
Generalization of spatial databases consists of complicated operations including not only geometric transformations but also topological changes. The changes often result in an inc...
ER
2004
Springer
13 years 10 months ago
2004
Springer
When we derive multi-scale databases from a source spatial database, the geometries and topological relations, which are a kind of constraints defined explicitly or implicitly in ...
SSD
1993
Springer
13 years 8 months ago
1993
Springer
: Spatial data types or algebras for database systems should (i) be fully general (which means, closed under set operations, hence e.g. a region value can be a set of polygons with...
ICDE
2005
IEEE
13 years 10 months ago
2005
IEEE
We pose the question: how do we efficiently evaluate a join operator, distributed over a heterogeneous network? Our objective here is to optimize the delay of output tuples. We di...
ER
2004
Springer
13 years 10 months ago
2004
Springer
In this paper, we develop a novel Web Usage Manipulation Language (WUML) which is a declarative language for manipulating Web log data. We assume that a set of trails formed by use...