The Situation Calculus: A Case for Modal Logic |
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| Authors: | Gerhard Lakemeyer |
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| Affiliation: | (1) School of Information Technology and Engineering, Faculty of Engineering, University of Ottawa, Ottawa, Canada;(2) National ICT Australia, Sydney, Australia;(3) School of Computer Science and Engineering, University of New South Wales, Sydney, Australia |
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| Abstract: | The situation calculus is one of the most established formalisms for reasoning about action and change. In this paper we will review the basics of Reiter’s version of the situation calculus, show how knowledge and time have been addressed in this framework, and point to some of the weaknesses of the situation calculus with respect to time. We then present a modal version of the situation calculus where these problems can be overcome with relative ease and without sacrificing the advantages of the original. |
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