Reconciling Description Logic and Non-Monotonic Reasoning in the Legal Domain

This project seeks to align Description Logics with non-monotonic formalisms in general and with the so-called Default or Defeasible Logics in particular, so that one can model dynamic situations, exceptions and other non-monotonic aspects of reasoning, such as legal reasoning and legal services argumentation. In particular, we shall investigate the barriers Description Logics are faced with; for instance, handling exceptions not explicitly contemplated in the normative literature. Thus, this project also includes the addition of non-monotonic features to an already built prototype that allows for reasoning about legal cases, thereby integrating the monotonic and non-monotonic semantics to be tested with complex cases arising from legal practice.

Joint research program with Universidade Federal de Pernambuco (UFPE) funded by CNRS and FACEPE (Brazil).


Scientific Responsible for CRIL :
Fred Freitas (UFPE)
Duration :
2017-2019