Research Publications
All Journal Publication - 2009 | |
| Narrow your search | 160 result(s) |
By Type By Year By Research Group | Anomaly detection is becoming a powerful and necessary component as wireless networks gain popularity. In this paper, we evaluate the efficacy of PCA based anomaly detection for wireless mesh networks (WMN). PCA based method was originally developed for ... A trajectory is a sequence of locations, each associated with a timestamp, describing the movement of a point. Trajectory data is becoming increasingly available and the size of recorded trajectories is getting larger. In this paper we study the problem ... This paper proposes an efficient method for detecting ghost and left objects in surveillance video, which, if not identified, may lead to errors or wasted computational power in background modeling and object tracking in video surveillance systems. This ... Temporal autocorrelation of the dynamic on-body radio channel is characterized empirically and theoretically based on measurements. The channel coherence time is found to be approximately 20 to 70~ms for a human subject either walking or running. Using a ... In this paper, we study the transmission power to secure connectivity of a network. Instead of requiring all nodes to be connected, we require only that a large fraction (e.g. 95%) be connected, termed the giant component. We show that with this ... |