> Toulmin [59] has given an excellent philosophical account of the
general structure of arguments. The relation between argumentation (in the form
of a dialogue-game) and classical (monotonic) logic has been studied by Lorenz
and Lorenzen [4] who have showed that classical first-order logic can be viewed as
dialogue-game logic where propositions are entities which can be either won or
lost.
[08:10:38] <anonymous-big-owner> [support]
> In AI, much work has been done to analyze the structure of arguments and to build computer systems which can engage in the exchange of arguments. Argument systems which can understand editorials or engage in political dialogues have been built by Alvarado [l] and Birnbaum et al. [5, 6, 401. An in-depth analysis of argument structure has been provided by Cohen [9]. These works can be considered as forming an heuristic approach to argument-based commonsense reasoning. Roughly, the idea of argum