Abduction, Conversational Implicature and Misleading

Chiaki Sakama and Katsumi Inoue

7th International Conference on Model-based Reasoning in Scientific and Technology (MBR'15), Sestri Levante, Italy, June 2015.


In this paper, we study abduction in human dialogues. Two different types of abduction are introduced and formulated using propositional modal logic. We next formulate conversational implicature in the same logic and contrast it with abduction in dialogues. We also argue how speakers use abduction or conversational implicature for the purpose of misleading hearers.

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