We present Darwin, an enabling technology for mobile phone sensing that combines collaborative sensing and classification techniques to reason about human behavior and context on ...
We present HERMES, a prototype system based on a powerful query language for trajectory databases, which enables the support of aggregative Location-Based Services (LBS). The key ...
Nikos Pelekis, Elias Frentzos, Nikos Giatrakos, Ya...
We identify crucial design issues in building a distributed inverted index for a large collection of web pages. We introduce a novel pipelining technique for structuring the core ...
Although an optimistic approach has been shown to be better suited than locking protocols for real-time database systems (RTDBS), it has the problems of unnecessary restarts and h...
An iterator is proposed that allows to apply sequences of update operations in a set-oriented way with deterministic semantics. Because the mechanism is independent of a particula...