News details

  • NOVA LINCS researchers receive Best Paper Award at JELIA 2021
  • Jun 2021
  • Ricardo Gonçalves, Matthias Knorr, and João Leite, NOVA LINCS researchers from the Knowledge-Based Systems Group, received the Best Paper Award at the (CORE Rank A) 17th European Conference on Logics in Artificial Intelligence (JELIA 2021), for their work “On Syntactic Forgetting under Uniform Equivalence”, in collaboration with Tomi Janhunen (Tampere University, Finland). Forgetting is an operation that allows the removal of middle variables no longer deemed relevant from a knowledge base. Its study was initially triggered by the wish to eliminate (temporary) variables representing auxiliary concepts, with the goal of restoring the declarative nature of some knowledge base, or just to simplify it. It is currently becoming a necessary operation to properly deal with legal and privacy issues, including, for example, to enforce the new EU General Data Protection Regulation, which includes the right to be forgotten. In this paper, the authors build on their previous theoretical results regarding the limits of what can be forgotten without losing additional information, and present a concrete operator that achieves the desired result in modular knowledge bases with minimal disruption. The European Conference on Logics in Artificial Intelligence is a major biennial forum for the discussion of logic-based approaches to artificial intelligence. The JELIA 17th edition was held only online, on May 17-20 2021, hosted by University of Klagenfurt, Austria.