|Title||Formalizing Deductive Coherence: An Application to Norm Evaluation|
|Publication Type||Conference Paper|
|Year of Publication||2008|
|Authors||Joseph S, Dellunde P, Schorlemmer M, Sierra C|
|Conference Name||Proceedings of the 3rd International Workshop on Normative Multiagent Systems (NorMAS 2008). Associated with DEON 2008, Luxenbourg, 15-16 July, 2008|
In this paper we study how agents can autonomously deliberate on norms and cognitions in the context of a normative multiagent system. We propose Thagard’s cognitive theory of coherence as a tool to achieve this autonomous deliberation. Taking a proof-theoretic approach, we first provide a formalization of coherence theory, focusing on a particular type of coherence, namely deductive coherence. We then propose a mechanism to compute coherence values between nodes in a coherence graph, making it fully computational. We further introduce a semantic interpretation of coherence using the notion of degrees of consistency by Ruspini. Finally, we illustrate the formalism in a normative multiagent setting where the norms are established to share a common resource, in this case water. We use graded logic to incorporate uncertainty reasoning in our example.
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