My PhD research is exploring the connection between belief revision and argumentation, and how the former can be used in the latter to justify the revision of an argument during the course of a dialogue.

Certain dialogue games (such as PPD0) allow commitments to be retracted; but retractions must be stable -- that is, a retracted commitment cannot be a consequent of those retained. This idea of stability is similar to that of integrity in the AGM model of belief revision.

In my research, I'm exploring factors that can influence minimal change in structured argumentation and how these can be used to reason about the ways in which an argument can be removed from a system.