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Forgetting and Update – an exploration

Authors: Abhaya Nayak, Yin Chen, and Fangzhen Lin

Published in: Dagstuhl Seminar Proceedings, Volume 7351, Formal Models of Belief Change in Rational Agents (2007)

Abstract

Knowledge Update (respectively Erasure) and Forgetting are two very different concepts, with very different underlying motivation. Both are tools for knowledge management; however while the former is meant for accommodating new knowledge into a knowledge corpus, the latter is meant for modifying – in fact reducing the expressivity – of the underlying language. In this paper we show that there is an intimate connection between these two concepts: a particular form of knowledge update and literal forgetting are inter-definable. This connection is exploited to enhance both our understanding of update as well as forgetting in this paper.

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Abhaya Nayak, Yin Chen, and Fangzhen Lin. Forgetting and Update – an exploration. In Formal Models of Belief Change in Rational Agents. Dagstuhl Seminar Proceedings, Volume 7351, pp. 1-14, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{nayak_et_al:DagSemProc.07351.12,
  author =	{Nayak, Abhaya and Chen, Yin and Lin, Fangzhen},
  title =	{{Forgetting and Update – an exploration}},
  booktitle =	{Formal Models of Belief Change in Rational Agents},
  pages =	{1--14},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{7351},
  editor =	{Giacomo Bonanno and James Delgrande and J\'{e}r\^{o}me Lang and Hans Rott},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.07351.12},
  URN =		{urn:nbn:de:0030-drops-12131},
  doi =		{10.4230/DagSemProc.07351.12},
  annote =	{Keywords: Knowledge Update, Erasure, Forgetting, Dalal Distance, Winslett Distance.}
}

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Forgetting and Update – an exploration

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