We are delighted to be hosting a visit from Martin Caminada who has recently joined the University of Aberdeen. He will be here on 12 December to deliver a seminar in Wolfson entitled,

Argumentation as Inference versus Argumentation as Dialogue —
reconciling two lines of research

Abstract:
In the formal argumentation community, one can distinguish two main lines of research: argumentation as inference and argumentation as dialogue. The first line of research, going back to the work of Pollock, Vreeswijk and Simari & Loui, is focused in argumentation as a way of performing non-monotonic entailment. That is, it is focused on the *outcome* of argumentation. The second line of research, going back to the work of Hamblin, Mackenzie and Walton & Krabbe, is focused on argumentation as dialectics, involving various actors. That is, it is focused on the *process* of argumentation.
In our recent work, we aim to reconcile these two lines of research.
That is, we aim to express argument-based entailment as the ability to
win a discussion. In particular, we are able to show that:
(1) grounded semantics can be interpreted in terms of a persuasion dialogue
(2) (credulous) preferred semantics can be interpreted in terms of Socratic dialogue
(3) ideal and stable semantics can both be interpreted as specific sub-forms of Socratic dialogue
Apart from abstract argumentation, we also examine the possibilities of redefining ASPIC-style entailment in terms of structured dialogue. In general, we think that argument-based inference is not so much about what is true, but about what can be defended in rational discussion.