Quasi‐Indexicals and Knowledge Reports

Cognitive Science 21 (1):63-107 (1997)

Authors
William J. Rapaport
State University of New York, Buffalo
Abstract
We present a computational analysis of de re, de dicto, and de se belief and knowledge reports. Our analysis solves a problem first observed by Hector-Neri Castañeda, namely, that the simple rule `(A knows that P) implies P' apparently does not hold if P contains a quasi-indexical. We present a single rule, in the context of a knowledge-representation and reasoning system, that holds for all P, including those containing quasi-indexicals. In so doing, we explore the difference between reasoning in a public communication language and in a knowledge-representation language, we demonstrate the importance of representing proper names explicitly, and we provide support for the necessity of considering sentences in the context of extended discourse (for example, written narrative) in order to fully capture certain features of their semantics.
Keywords Hector-Neri Castaneda  quasi-indexicals  semantic networks  knowledge representation  knowledge as true belief
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DOI 10.1207/s15516709cog2101_3
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References found in this work BETA

From Discourse to Logic.Hans Kamp & Uwe Reyle - 1993 - Dordrecht: Kluwer Academic Publishers.
Is Justified True Belief Knowledge?Edmund Gettier - 1963 - Analysis 23 (6):121-123.
Situations and Attitudes.Jon Barwise & John Perry - 1981 - Journal of Philosophy 78 (11):668-691.
Knowledge and Belief.Jaakko Hintikka - 1962 - Ithaca: Cornell University Press.
On Denoting.Bertrand Russell - 1905 - Mind 14 (56):479-493.

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Citations of this work BETA

How Minds Can Be Computational Systems.William J. Rapaport - 1998 - Journal of Experimental and Theoretical Artificial Intelligence 10 (4):403-419.
The Glair Cognitive Architecture.Stuart C. Shapiro & Jonathan P. Bona - 2010 - International Journal of Machine Consciousness 2 (2):307-332.
The Philosophy of Computer Science.Raymond Turner - 2013 - Stanford Encyclopedia of Philosophy.

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