Algorithms that exploit sort orders are widely used to implement joins, grouping, duplicate elimination and other set operations. Query optimizers traditionally deal with sort ord...
We present MiniCount, the first efficient sound and complete algorithm for finding maximally contained rewritings of conjunctive queries with count, using conjunctive views with c...
Information agents are computational software systems that provides transparent access to many different information sources in the Internet, and to be able to retrieve, analyze, ...
The care of the elder at home is highly demanded in modern societies. It is based on the difficult task of coordinating multiple professionals and procedures acting on the same pa...
Abstract. In this paper, we have investigated the feasibility of a selforganized evacuation process when compared with a centralized control. The evacuation strategy is based on ...