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Talks & Seminars
Title: Knowledge from Inadvertant and Strategic Communication
Prof. Rohit Parikh, Distinguished Professor, Graduate Center, City University of New York and Brooklyn College, City University of New York and Brooklyn College
Date & Time: December 23, 2013 14:30
Venue: Lecture Hall, B Block, 02nd/03rd Floor, Department of Computer Science and Engineering, Kanwal Rekhi Building
Abstract:
A popular model in knowledge updating is where we receive true information from a trusted source. The work of Jan Plaza and others, and the AGM theory both use this paradigm. This is also the method used by Geanakoplos and Polemarchakis, and RP and Krasucki, in their "activist" versions of Aumann's result. However, the literature is rife with examples where information is revealed inadvertantly so that the one revealing information is not doing it deliberately but is tricked into it. We give examples from Shakespeare, Saki and Birbal. A second departure from the paradigm arises when the two sources do not share objectives, so that the Gricean assumption of cooperation does not hold. Nonetheless, some information can get across when the interests of the two parties overlap at least in part. We report on some theoretical work in this area, some of it falling under the heading of "cheap talk," and offer a model.
Speaker Profile:
Prof. Rohit Parikh is a Distinguished Professor of Computer Science, Mathematics and Philosophy at the Graduate Center, City University of New York. He is also affiliated with Department of Computer Science at Brooklyn College. Prof. Parikh has made deep contributions to wide range of areas including formal languages, recursive function theory, proof theory, non-standard analysis, logic of programs, logic of knowledge, philosophy of language, belief revision and game theory. The theme that concerns most of his recent papers is Social Software, which is an analysis of social procedures, from elections to cake cutting, using ideas from Computer Science, Game Theory and Logic.
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