W. Drabent, T. Eiter, G. Ianni, T. Krennwallner, T. Lukasiewicz, J. Maluszynski:
"Hybrid Reasoning with Rules and Ontologies";
in: "Semantic Techniques for the Web: The REWERSE Perspective", F. Bry, J. Maluszynski (ed.); Springer, Heidelberg, 2009, (invited), ISBN: 978-3-642-04580-6, 1 - 49.

The purpose of this chapter is to report on work that has been done in the REWERSE project concerning hybrid reasoning with rules and ontologies. Two major streams of work have been pursued within REWERSE. They start from the predominant semantics of non-monotonic rules in logic programming. The one stream was an extension of non-monotonic logic programs under answer set semantics, with query interfaces to external knowledge sources. The other stream, in the spirit of the AL-log approach of enhanced deductive databases, was an extension of Datalog (with the well-founded semantics, which is predominant in the database area). The former stream led to so-called non-monotonic dl-programs and hex-programs, and the latter stream to hybrid well-founded semantics. Further variants and derivations of the formalisms (like a well-founded semantics for dl-programs, respecting probabilistic knowledge, priorities, etc.) have been conceived.

Nonmonotonic Reasoning, Hybrid Reasoning, Hybrid Knowledge Base, Rule Languages

http://dx.doi.org/10.1007/978-3-642-04581-3_1

Project Head Thomas Eiter:
Answer Set Programmierung für das Semant

Project Head Thomas Eiter:
Modulare HEX-Programme

Project Head Thomas Eiter:
ONOTRULE - ONTOlogies meet business RULEs

Project Head Thomas Eiter:
REWERSE

Project Head Thomas Eiter:
Schließen in hybriden Wissensbasen

Project Head Michael Fink:
Inconsistency Management for Knowledge-Integration Systems