A workflow consists of a collection of coordinated tasks designed to carry out a welldefined complex process, such as catalog ordering, trip planning, or a business process in an ...
OLAP servers based on relational backends typically exploit materialized aggregate tables to improve response times of complex analytical queries. One of the key problems in this ...
Katja Hose, Daniel Klan, Matthias Marx, Kai-Uwe Sa...
Abstract. We address the challenge of adaptation in open systems. Open systems are characterized by interactions among autonomous and heterogeneous participants. In such systems, e...
Fabiano Dalpiaz, Amit K. Chopra, Paolo Giorgini, J...
Abstract. Acquiring adaptation knowledge for case-based reasoning systems is a challenging problem. Such knowledge is typically elicited from domain experts or extracted from the c...
We observe two deficiencies of current query processing and scheduling techniques for sensor networks: (1) A query execution plan does not adapt to the hardware characteristics o...