Logic, language and computation, vol. 2
How to set up normal optimal answer models
Language, games, and evolution
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In this paper, we present a game---theoretic account of a subclass of `relevance ' implicatures arising from irrelevant answers. We show that these phenomena can be explained if we assume that interlocutors agree on production and interpretation strategies that are robust against small `trembles' in the speaker's production strategy. In this context, we argue for a new pragmatic principle which we call the principle of optimal completion . We also show that our model provides a parallel account of scalar implicatures which removes some limitations of previous accounts.