The syntax, semantics and an axiom system for an extension of Propositional Dynamic Logic (PDL) for order of magnitude qualitative reasoning which formalizes the concepts of close...
: We propose specification of schema mappings and agents' actions in XML data integration task. We discuss the problem in a highly-dynamic environment consisting of a communit...
Grazyna Brzykcy, Jerzy Bartoszek, Tadeusz Pankowsk...
The nondeterministic information logic NIL has been introduced by Orlowska and Pawlak in 1984 as a logic for reasoning about total information systems with the similarity, the forw...
Answering queries over an incomplete database w.r.t. a set of constraints is an important computational task with applications in fields as diverse as information integration and ...