320 search results - page 48 / 64 » A Theory of Spatio-Temporal Database Queries |
SAC
2006
ACM
14 years 1 months ago
2006
ACM
In the paper we describe the problem of grouping and aggregation in the concept-oriented data model. The model is based on ordering its elements within a hierarchical multidimensi...
EDBT
2008
ACM
14 years 7 months ago
2008
ACM
The spatial and temporal databases have been studied widely and intensively over years. In this paper, we study how to answer queries of finding the best departure time that minim...
GIS
2004
ACM
14 years 8 months ago
2004
ACM
Spatial, temporal and spatio-temporal aggregates over continuous streams of remotely sensed image data build a fundamental operation in many applications in the environmental scie...
SIGMOD
2009
ACM
14 years 7 months ago
2009
ACM
The skyline operator returns from a set of multi-dimensional objects a subset of superior objects that are not dominated by others. This operation is considered very important in ...
PODS
2008
ACM
14 years 7 months ago
2008
ACM
In the rank join problem, we are given a set of relations and a scoring function, and the goal is to return the join results with the top K scores. It is often the case in practic...