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PODS
2005
ACM
164views Database» more  PODS 2005»
14 years 9 months ago
Lower bounds for sorting with few random accesses to external memory
We consider a scenario where we want to query a large dataset that is stored in external memory and does not fit into main memory. The most constrained resources in such a situati...
Martin Grohe, Nicole Schweikardt
PCM
2001
Springer
195views Multimedia» more  PCM 2001»
14 years 1 months ago
A Motion Activity Descriptor and Its Extraction in Compressed Domain
A novel motion activity descriptor and its extraction from a compressed MPEG (MPEG-1/2) video stream are presented. The descriptor consists of two parts, a temporal descriptor and ...
Xinding Sun, Ajay Divakaran, B. S. Manjunath
TOG
2008
104views more  TOG 2008»
13 years 9 months ago
Streaming multigrid for gradient-domain operations on large images
We introduce a new tool to solve the large linear systems arising from gradient-domain image processing. Specifically, we develop a streaming multigrid solver, which needs just tw...
Michael M. Kazhdan, Hugues Hoppe
SSD
2005
Springer
185views Database» more  SSD 2005»
14 years 2 months ago
Evaluation of a Dynamic Tree Structure for Indexing Query Regions on Streaming Geospatial Data
Most recent research on querying and managing data streams has concentrated on traditional data models where the data come in the form of tuples or XML data. Complex types of strea...
Quinn Hart, Michael Gertz, Jie Zhang
ICDE
2012
IEEE
237views Database» more  ICDE 2012»
11 years 11 months ago
On Discovery of Traveling Companions from Streaming Trajectories
— The advance of object tracking technologies leads to huge volumes of spatio-temporal data collected in the form of trajectory data stream. In this study, we investigate the pro...
Lu An Tang, Yu Zheng, Jing Yuan, Jiawei Han, Alice...