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SIGMOD
2011
ACM
249views Database» more  SIGMOD 2011»
14 years 20 days ago
ProApproX: a lightweight approximation query processor over probabilistic trees
We demonstrate a system for querying probabilistic XML documents with simple XPath queries. A user chooses between a variety of query answering techniques, both exact and approxim...
Pierre Senellart, Asma Souihli
GISCIENCE
2008
Springer
140views GIS» more  GISCIENCE 2008»
14 years 11 months ago
Modeling Herds and Their Evolvements from Trajectory Data
A trajectory is the time-stamped path of a moving entity through space. Given a set of trajectories, this paper proposes new conceptual definitions for a spatio-temporal pattern n...
Yan Huang, Cai Chen, Pinliang Dong
ICDT
2007
ACM
106views Database» more  ICDT 2007»
15 years 4 months ago
Trajectory Databases: Data Models, Uncertainty and Complete Query Languages
Moving objects produce trajectories. We describe a data model for trajectories and trajectory samples and an efficient way of modeling uncertainty via beads for trajectory samples....
Bart Kuijpers, Walied Othman
DEXAW
2005
IEEE
119views Database» more  DEXAW 2005»
15 years 3 months ago
A Performance Measurement Perspective for Event-Driven Process Chains
Business processes access Data Warehouse (DWH) information for performance measurement, supporting business decisions. Today, there are no conceptual models available that make th...
Veronika Stefanov, Beate List
ITC
2003
IEEE
97views Hardware» more  ITC 2003»
15 years 3 months ago
A Generic Test Path and DUT Model for DataCom ATE
– It is well known that the output signals measured by an automatic test equipment (ATE) system are not only due to the device-under-test (DUT), but also due to the test path. Fo...
Jie Sun, Mike Li