First International Workshop, ArgNMR 2007, Tempe, Arizona, US, May 14, 2007, Proceedings

Research on argumentation and non-monotonic reasoning began in full force in the early eighties. The first attempts showed how argumentation results in a very natural way of conceptualizing commonsense reasoning, appropriately reflecting its defeasible nature. Further work in the knowledge representation and reasoning community has shown that argumentation provides a useful perspective for relating different non-monotonic formalisms. More recently, argumentation has been revealed as a powerful conceptual tool for exploring the theoretical foundations of reasoning and interaction in autonomous agents and multiagent systems. This volume contains the papers that will be presented at the First International Workshop on Argumentation and Non-Monotonic Reasoning (ArgNMR 2007) on May 14, 2007 in Tempe, Arizona, US. Each submission was reviewed by at least 3 programme committee members. In covers topics ranging from fundamental theoretical basis to design and implementation of argument-based systems including semantics, proof theory, applications and the comparison of those systems with other types of non-monotonic reasoning