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79
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VLDB
1990
ACM
106views Database» more  VLDB 1990»
15 years 2 months ago
The Time Index: An Access Structure for Temporal Data
In this paper, we describe a new indexing technique, the time indez, for improving the performance of certain classes of temporal queries. The time index can be used to retrieve v...
Ramez Elmasri, Gene T. J. Wuu, Yeong-Joon Kim
87
Voted
FLAIRS
2003
15 years 9 days ago
Automated Data Fusion and Situation Assessment in Space Systems
Spacecraft are key components of military operations and everyday life. To achieve space situation awareness, human operators must monitor large numbers of parameters. During off-...
Mark L. Hanson, Paul G. Gonsalves
91
Voted
SSD
2001
Springer
94views Database» more  SSD 2001»
15 years 3 months ago
Selectivity Estimation of Complex Spatial Queries
Several studies have focused on the efficient processing of simple spatial query types such as selections and spatial joins. Little work, however, has been done towards the optimiz...
Nikos Mamoulis, Dimitris Papadias
86
Voted
INFOCOM
2007
IEEE
15 years 5 months ago
Border Games in Cellular Networks
— In each country today, cellular networks operate on carefully separated frequency bands. This careful separation is imposed by the regulators of the given country to avoid the ...
Márk Félegyházi, Mario Cagalj...
83
Voted
FUIN
2007
121views more  FUIN 2007»
14 years 11 months ago
A Possibility-Theoretic View of Formal Concept Analysis
Abstract. The paper starts from the standard relational view linking objects and properties in formal concept analysis, here augmented with four modal-style operators (known as suf...
Didier Dubois, Florence Dupin de Saint-Cyr, Henri ...