Abstract
Since Peter Aczel’s theory[1] of hypersets, many applications to formalizations of a circular object such as a mutual belief has been proposed [3,2,5]. This paper will propose Membership Description Systems (MDSs), a partial revision system of circular objects and their applications to a dynamic semantics of a dialogue in the sense that a dialogue can be considered as a revision process of mutual beliefs between its agents. Although usual dynamic semantics [10] updates a variable assignment or a set of information states, our proposal of a semantics of dialogues directly updates situations, which is specified by MDSs, as dynamic semantics of circular propositions [11] directly updates situations. Furthermore, using MDSs as updated objects in the semantics makes a partial and direct update of circular situations themselves possible. As a result, a dynamic semantics of a language with the ↓-operator, which is introduced by [3] to describe circular propositions, can be provided.
This reseach is supported by the Grant of the Japan Society of Promotion for science. I am grateful to Makoto Kanazawa, Nigel Collier and the reviewer for their helpful advise and comments on the previous research of this paper.
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Ogata, N. (2001). A Revision System of Circular Objects and Its Applications to Dynamic Semantics of Dialogues. In: Moortgat, M. (eds) Logical Aspects of Computational Linguistics. LACL 1998. Lecture Notes in Computer Science(), vol 2014. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-45738-0_13
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DOI: https://doi.org/10.1007/3-540-45738-0_13
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