In the last decades, most works in the literature have been devoted to study argumentation
formalisms that focus on a defeat relation among arguments. Recently, the study of a support …

In Dungs seminal work, an argumentation framework was defined by a set of abstract
arguments and a binary (and also abstract) relation between these arguments, called attack …

Different abstract argumentation frameworks have been used for various applications within
multi-agents systems. Among them, bipolar frameworks make use of both attack and support …

The issue of representing attacks to attacks in argumentation is receiving an increasing
attention as a useful conceptual modelling tool in several contexts. In this paper we present …

In this paper, we consider two drawbacks of Cayrol and Lagasque-Schiex's meta-
argumentation theory to model bipolar argumentation frameworks. We consider first the “lost …

In dialogical argumentation, it is often assumed that the involved parties will always correctly
identify the intended statements posited by each other and realize all of the associated …

In this paper, we introduce argumentation frameworks with necessities (AFNs), an extension
of Dung's argumentation frameworks (AFs) taking into account a necessity relation as a kind …

With the growing use of the Social Web, an increasing number of applications for
exchanging opinions with other people are becoming available online. These applications …

This paper provides equational semantics for Dung's argumentation networks. The network
nodes get numerical values in [0, 1], and are supposed to satisfy certain equations. The …

The abstract nature of Dung's theory of argumentation accounts for its wide-spread
application as a general framework for various species of non-monotonic reasoning, and …