Representing networks is a major interest of researchers in information visualization. In this article, I present novel visualization techniques based on Jacques Bertin’s reorderable matrices. As the human brain is particularly effective at processing visual information, researchers in computer science developed a number of visual exploration systems to analyze graphs and networks. In the last ...

Dependencies have played a significant role in database design for many years. They have also been shown to be useful in query optimization. In this paper, we discuss the new type of dependency for polarized lexicographically ordered sets of tuples. We introduce formally the concept of polarized order dependencies (PODs). We discuss their potential significance for database systems, and present...

We prove a theorem about the relative entropy of quantum states, which roughly states that if the relative entropy, S(ρ‖σ) ∆ = Tr ρ(log ρ− log σ), of two quantum states ρ and σ is at most c, then ρ/2 ‘sits inside’ σ. Using this ‘substate’ theorem, we give tight lower bounds for the privacy loss of bounded error quantum communication protocols for the index function problem. We also give tight l...

In this paper, a new adaptive bolus-chasing control scheme is proposed to synchronize the bolus peak in a patient's vascular system and the imaging aperture of a computed tomography (CT) scanner. The proposed control scheme is theoretically evaluated and experimentally tested on a modified Siemens SOMATOM Volume Zoom CT scanner. The first set of experimental results are reported on bolus-chasin...

With the increasing use of mobile devices, a lot of tracks of movement of objects are being collected. The advanced trajectory data mining research has allowed the discovery of many types of patterns from these data, like flocks, leadership, avoidance, frequent sequences, and other types of patterns. In this paper we introduce a new kind of pattern: a chasing behavior between trajectories. We p...