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» Efficient pattern matching over event streams
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CVPR
2009
IEEE
15 years 2 months ago
Observe Locally, Infer Globally: a Space-Time MRF for Detecting Abnormal Activities with Incremental Updates
We propose a space-time Markov Random Field (MRF) model to detect abnormal activities in video. The nodes in the MRF graph correspond to a grid of local regions in the video fra...
Jaechul Kim (University of Texas at Austin), Krist...
CORR
2010
Springer
77views Education» more  CORR 2010»
13 years 7 months ago
Stochastic Analysis of Non-slotted Aloha in Wireless Ad-Hoc Networks
: In this paper we propose two analytically tractable stochastic models of non-slotted Aloha for Mobile Ad-hoc NETworks (MANETs): one model assumes a static pattern of nodes while ...
Bartek Blaszczyszyn, Paul Mühlethaler
CVPR
2008
IEEE
14 years 9 months ago
Multi-object shape estimation and tracking from silhouette cues
This paper deals with the 3D shape estimation from silhouette cues of multiple moving objects in general indoor or outdoor 3D scenes with potential static obstacles, using multipl...
Li Guan, Jean-Sébastien Franco, Marc Pollef...
SIGMOD
2009
ACM
130views Database» more  SIGMOD 2009»
14 years 7 months ago
FlashLogging: exploiting flash devices for synchronous logging performance
Synchronous transactional logging is the central mechanism for ensuring data persistency and recoverability in database systems. Unfortunately, magnetic disks are ill-suited for t...
Shimin Chen
VLSISP
2008
173views more  VLSISP 2008»
13 years 7 months ago
Fast Bit Gather, Bit Scatter and Bit Permutation Instructions for Commodity Microprocessors
Advanced bit manipulation operations are not efficiently supported by commodity word-oriented microprocessors. Programming tricks are typically devised to shorten the long sequence...
Yedidya Hilewitz, Ruby B. Lee