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CVPR
2005
IEEE
15 years 28 days ago
Detection and Explanation of Anomalous Activities: Representing Activities as Bags of Event n-Grams
We present a novel representation and method for detecting and explaining anomalous activities in a video stream. Drawing from natural language processing, we introduce a represen...
Raffay Hamid, Amos Y. Johnson, Samir Batta, Aaron ...
ICALP
2009
Springer
14 years 11 months ago
Node-Weighted Steiner Tree and Group Steiner Tree in Planar Graphs
We improve the approximation ratios for two optimization problems in planar graphs. For node-weighted Steiner tree, a classical network-optimization problem, the best achievable ap...
Erik D. Demaine, MohammadTaghi Hajiaghayi, Philip ...
SEMWEB
2005
Springer
14 years 4 months ago
Representing Probabilistic Relations in RDF
Probabilistic inference will be of special importance when one needs to know how much we can say with what all we know given new observations. Bayesian Network is a graphical prob...
Yoshio Fukushige
ICCD
2000
IEEE
116views Hardware» more  ICCD 2000»
14 years 7 months ago
Representing and Scheduling Looping Behavior Symbolically
This paper presents a very general, exact technique for scheduling looping data-flow graphs. In contrast to the conventional technique using loop iteration variables and integer ...
Steve Haynal, Forrest Brewer
ARSCOM
2005
94views more  ARSCOM 2005»
13 years 10 months ago
Isometrically Embedded Graphs
Can an arbitrary graph be embedded in Euclidean space so that the isometry group of its vertex set is precisely its graph automorphism group? This paper gives an affirmative answe...
Debra L. Boutin