We investigate bifurcations observed in a Morris-Lecar neuron model. Especially, we paid attention to the change of bifurcation structures between type I and type II models. We fo...
Novelty detection is concerned with identifying abnormal system behaviours and abrupt changes from one regime to another. This paper proposes an on-line (causal) novelty detection...
In this paper, we deal with the problem of performing what-if analysis for changes that occur in the schema/structure of the data warehouse We abstract software modules, queries, r...
George Papastefanatos, Panos Vassiliadis, Alkis Si...
Spectral methods are naturally suited for dynamic graph layout because, usually, moderate changes of a graph yield moderate changes of the layout. We discuss some general principl...
The vulnerability of smart grid systems is a growing concern. Signal detection theory is employed here to detect a change in the system. We employ a discrete-time linear state spa...