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ICDE
2001
IEEE
128views Database» more  ICDE 2001»
15 years 11 months ago
Counting Twig Matches in a Tree
We describe efficient algorithms for accurately estimating the number of matches of a small node-labeled tree, i.e., a twig, in a large node-labeled tree, using a summary data str...
Zhiyuan Chen, H. V. Jagadish, Flip Korn, Nick Koud...
SIGMOD
2004
ACM
142views Database» more  SIGMOD 2004»
15 years 10 months ago
Conditional Selectivity for Statistics on Query Expressions
Cardinality estimation during query optimization relies on simplifying assumptions that usually do not hold in practice. To diminish the impact of inaccurate estimates during opti...
Nicolas Bruno, Surajit Chaudhuri
TASE
2010
IEEE
14 years 4 months ago
Robust Calibration for Localization in Clustered Wireless Sensor Networks
This paper presents a robust calibration procedure for clustered wireless sensor networks. Accurate calibration of between-node distances is one crucial step in localizing sensor n...
Jung Jin Cho, Yu Ding, Yong Chen, Jiong Tang
CVPR
2005
IEEE
16 years 3 days ago
Multiple Collaborative Kernel Tracking
Those motion parameters that cannot be recovered from image measurements are unobservable in the visual dynamic system. This paper studies this important issue of singularity in th...
Zhimin Fan, Ying Wu, Ming Yang
ICIP
2005
IEEE
15 years 11 months ago
Iterative generation of motion-compensated side information for distributed video coding
Distributed Video Coding (DVC) is a coding paradigm that gives the decoder the task to exploit the source statistics to achieve efficient compression. Current approaches to DVC rel...
Xavier Artigas, Luis Torres