In this paper we consider privacy problems with anonymized transaction databases, i.e., transaction databases where the items are renamed in order to hide sensitive information. In...
Web services are increasingly attracting attention for their ability to provide standard interfaces to heterogeneous distributed services. Through these standard interfaces, it is...
We study the complexity of the reachability problem for a new subclass of Petri nets called simple-circuit Petri nets, which properly contains several well known subclasses such as...
Even though grid research is prosperous in an extensive context, few grid platforms for high performance computing are practical and in operation so far. Since most applications a...
Default Logic and Logic Programming with stable model semantics are recognized as powerful frameworks for incomplete information representation. Their expressive power are suitabl...