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...
Web usage mining attempts to discover useful knowledge from the secondary data obtained from the interactions of the users with the Web. Web usage mining has become very critical ...
An important reasoning task, in addition to the standard DL reasoning services, is conjunctive query answering. In this paper, we present a decision procedure for conjunctive query...
Social networks are widely accepted application of Semantic Web technologies and are also interesting for general public. Nowadays there is a lack of quality user-friendly browser ...
This paper describes our current activities to supply extended reasoning support to knowledge engineers who are building terminologies using Description Logics (DL) reasoners. The...