Record matching is the task of identifying records that match the same real world entity. This is a problem of great significance for a variety of business intelligence applicatio...
The nature of data in enterprises and on the Internet is changing. Data used to be stored in a database first and queried later. Today timely processing of new data, represented ...
Abstract. A top-k OLAP query groups measures with respect to some abstraction level of interesting dimensions and selects the k groups with the highest aggregate value. An example ...
We present the InfoBeacons system, in which a peer-to-peer network of beacons cooperates to route queries to the best information sources. The routing in our system uses techniques...
We introduce TOQL, a query language for querying time information in ontologies. TOQL is a high level query language that handles ontologies almost like relational databases. Queri...
Evdoxios Baratis, Euripides G. M. Petrakis, Sotiri...