As online communities proliferate, methods are needed to explore and capture patterns of activity within them. This paper focuses on the problem of identifying active subgroups wi...
: The strongly discussed EU Data Retention directive 2006/24/EC released in 2006 requires the operators of publicly accessible electronic communication networks to retain traffic a...
Gerald Stampfel, Wilfried N. Gansterer, Martin Ilg...
The Internet and Intranet reduce much of the costs of information sharing, but they do not solve receivers' reading and interpretation limitations. Alternatively, browsers an...
Spacecraft are key components of military operations and everyday life. To achieve space situation awareness, human operators must monitor large numbers of parameters. During off-...
A serious problem in learning probabilistic models is the presence of hidden variables. These variables are not observed, yet interact with several of the observed variables. Dete...