2204 search results - page 141 / 441 » Agnostic active learning |
162
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CVPR
2009
IEEE
17 years 3 days ago
2009
IEEE
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...
159
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ATAL
2007
Springer
15 years 11 months ago
2007
Springer
Activity recognition is a key component for creating intelligent, multi-agent systems. Intrinsically, activity recognition is a temporal classification problem. In this paper, we...
142
Voted
SIGIR
2005
ACM
15 years 10 months ago
2005
ACM
Information retrieval is, in general, an iterative search process, in which the user often has several interactions with a retrieval system for an information need. The retrieval ...
187
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CVPR
2003
IEEE
16 years 7 months ago
2003
IEEE
Monitoring activities using video data is an important surveillance problem. A special scenario is to learn the pattern of normal activities and detect abnormal events from a very...
186
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TSP
2012
14 years 17 days ago
2012
—In a cognitive radio network, opportunistic spectrum access (OSA) to the underutilized spectrum involves not only sensing the spectrum occupancy but also probing the channel qua...