We give machine characterisations and logical descriptions of a number of parameterized complexity classes. The focus of our attention is the class W[P], which we characterise as ...
A multi-tenant database system for Software as a Service (SaaS) should offer schemas that are flexible in that they can be extended for different versions of the application and d...
Stefan Aulbach, Dean Jacobs, Alfons Kemper, Michae...
In contrast with classical reasoning, where a solution is either correct or incorrect, approximate reasoning tries to compute solutions which are close to the ideal solution, with...
Alan Verberne, Frank van Harmelen, Annette ten Tei...
Peer-to-Peer (P2P) systems seek to provide sharing of computational resources, which may be duplicated or versioned over several peers. Duplicate resources (i.e. replicas) are the...
Deise de Brum Saccol, Nina Edelweiss, Renata de Ma...
Relational data exchange deals with translating a relational database instance over some source schema into a relational database instance over some target schema, according to a ...