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ICDE
2008
IEEE
136views Database» more  ICDE 2008»
16 years 9 months ago
Processing Event-Monitoring Queries in Sensor Networks
In this paper we present algorithms for building and maintaining efficient collection trees that provide the conduit to disseminate data required for processing monitoring queries...
Vassilis Stoumpos, Antonios Deligiannakis, Yannis ...
ICDE
2008
IEEE
131views Database» more  ICDE 2008»
16 years 9 months ago
Parallel Evaluation of Composite Aggregate Queries
Aggregate measures summarizing subsets of data are valuable in exploratory analysis and decision support, especially when dependent aggregations can be easily specified and compute...
Lei Chen 0003, Christopher Olston, Raghu Ramakrish...
ICDE
2006
IEEE
150views Database» more  ICDE 2006»
16 years 9 months ago
Efficient Aggregation of Ranked Inputs
A top-k query combines different rankings of the same set of objects and returns the k objects with the highest combined score according to an aggregate function. We bring to ligh...
Nikos Mamoulis, Kit Hung Cheng, Man Lung Yiu, Davi...
VIS
2007
IEEE
183views Visualization» more  VIS 2007»
16 years 9 months ago
Lattice Based Volumetric Global Illumination
We describe a novel volumetric global illumination framework based on the Face-Centered Cubic (FCC) lattice. An FCC lattice has important advantages over a Cartesian lattice. It ha...
Feng Qiu, Fang Xu, Zhe Fan, Neophytos Neophytou...
VIS
2004
IEEE
315views Visualization» more  VIS 2004»
16 years 8 months ago
STEPS - An Application for Simulation of Transsphenoidal Endonasal Pituitary Surgery
Endonasal transsphenoidal pituitary surgery is a minimally invasive endoscopic procedure, applied to remove various kinds of pituitary tumors. To reduce the risk associated with t...
André Neubauer, Katja Bühler, Lukas Mr...
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