It is well established that access patterns to encrypted data can leak a considerable amount of sensitive information [13]. Oblivious RAM (or ORAM for short) [5–11, 14, 18–20, 26, 28], originally proposed by Goldreich and Ostrovsky [8], is a cryptographic construction that allows a client to access encrypted data residing on an untrusted storage server, while completely hiding the access patter...

Previous studies have found broad distributions, resembling power laws for different measures of the size of rainfall events. We investigate the large-event tail of these distributions and find in one measure that tropical cyclones account for a large proportion of the very largest events outside the scaling regime, i.e., beyond the cutoff of the power law. Tropical cyclones are sufficiently ra...

A tournament Tn is an orientation of a complete graph on n vertices. A king in a tournament is a vertex from which every other vertex is reachable by a path of length at most 2. A sorted sequence of kings in a tournament Tn is an ordered list of its vertices u1, u2, . . . , un such that ui dominates ui+1 (ui → ui+1) and ui is a king in the subtournament induced by {uj : i ≤ j ≤ n} for each i = ...

The increasing popularity of social media has significantly changed user behavior and companies’ possibilities to engage in personalized advertising (targeted advertising based on user’s personal characteristics and preferences). Accordingly, there is a growing interest in the subject for business and scientific research. While the body of literature about social media grows in general, it surp...

Advertising is a common commercial activity. The evaluation of advertising effectiveness is an active area of interest within the advertising research community, and, of course, is most concerned by the advertisers. The most important services in a computer-based advertising infrastructure are advertising effectiveness evaluation, analysis, prediction, and scheduling. This work presents an agen...