950 search results - page 121 / 190 » Continuous Queries over Data Streams - Semantics and Impleme... |
176
click to vote
ICDE
2008
IEEE
16 years 17 days ago
2008
IEEE
Abstract-- We present COLR-Tree, an abstraction layer designed to support efficient spatio-temporal queries on live data gathered from a large collection of sensors. We use COLR-Tr...
VLDB
2001
ACM
15 years 3 months ago
2001
ACM
Queries navigate semistructured data via path expressions, and can be accelerated using an index. Our solution encodes paths as strings, and inserts those strings into a special i...
PODS
2007
ACM
15 years 11 months ago
2007
ACM
In [3], we introduced a framework for querying and updating probabilistic information over unordered labeled trees, the probabilistic tree model. The data model is based on trees ...
102
click to vote
DOLAP
2003
ACM
15 years 4 months ago
2003
ACM
Multidimensional aggregation queries constitute the single most important class of queries for data warehousing applications and decision support systems. The bottleneck in the ev...
IPSN
2005
Springer
15 years 4 months ago
2005
Springer
Tracking the identities of moving objects is an important aspect of most multi-object tracking applications. Uncertainty in sensor data, coupled with the intrinsic difficulty of ...