This research applies ideas from argumentation theory in the context of semantic wikis, aiming to provide support for structured-large scale argumentation between human agents. The implemented prototype is exemplified by modelling the MMR vaccine controversy.

This research focuses on justifications in an audit context. An argumentation framework based on the formal model of justification logic is applied for audit dialogues in the fish industry. Different forms of justifications used in audit like net persuasive evidence, breadth of issues, and framing evidence are formalised in the proposed framework.