The growth of mobile technology has made recording of user’s location possible. The systems that intent to use location in order to register user’s movement and to use the gen...
An important problem for many location-based applications is the continuous evaluation of proximity relations among moving objects. These relations express whether a given set of ...
The K-Nearest Neighbor search (kNN) problem has been investigated extensively in the past due to its broad range of applications. In this paper we study this problem in the contex...
Assistance in retrieving of documents on the World Wide Web is provided either by search engines, through keyword based queries, or by catalogues, which organise documents into hi...
It is well known that transactional and analytical systems each require different database architecture. In general, the database structure of transactional systems is optimized f...