One of the most widely studied systems of argumentation is the one described by Dung in a paper from 1995. Unfortunately, this framework does not allow for joint attacks on arguments, which we argue must be required of any truly abstract argumentation framework. A few frameworks can be said to allow for such interactions among arguments, but for various reasons we believe that these are inadequ...

This paper describes how we simulate a dialog aimed at resolving conflicts between an Instructing and an Executing Agent in explanation text planning. We describe how the two agents are modelled. We then illustrate the algorithm which, starting from the discovery of a conflict and proceeding through a set of negotiated belief revisions, brings to solve the conflict or to conclude that it cannot...

In this Article I discuss the process of constitution-making at the Federal Convention in Philadelphia' and at the Assemblee Constituante in Paris from 1789 to 1791.2 In doing so, I shall be guided by three objectives. In increasing order of abstraction and, I hope, of competence, they are: historical, sociological and conceptual. First, the comparison between the two eighteenth-century assembl...