Reasoning is defeasible when the corresponding argument is rationally compelling but not
deductively valid. The truth of the premises of a good defeasible argument provide support …

An argumentation framework is a pair made of a graph and a semantics. The nodes and the
edges of the graph represent respectively arguments and relations (eg, attacks, supports) …

In his seminal 1995 paper, Dung paved the way for abstract argumentation, a by now major
research area in knowledge representation. He pointed out that there is a problematic issue …

Consider an argument A that is attacked by an argument B, while A is preferred to B. Existing
approaches will either ignore the attack or reverse it. In this paper we introduce a new …

Within argumentation dynamics, a major strand of research is concerned with how changing
an argumentation framework affects the acceptability of arguments, and how to modify an …

Abstract Semantics based on weak admissibility were recently introduced to overcome a
problem with self-defeating arguments that has not been solved for more than 25 years. The …

In his seminal 1995 paper, Dung laid the foundations of abstract argumentation, a by now
major research area in knowledge representation. He pointed out that there is a problematic …

On the acceptability of arguments and its fundamental role in nonmonotonic reasoning, logic
programming and n-person games: 25 y Page 1 University of Groningen On the acceptability of …

Argumentation Frameworks (AFs) are a key formalism in AI research. Their semantics have
been investigated in terms of principles, which define characteristic properties in order to …

In abstract argumentation theory, many argumentation semantics have been proposed for
evaluating argumentation frameworks. This paper is based on the following research …