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Documents authored by Bonanno, Giacomo

Document
DOI: 10.4230/DagSemProc.09351.1
09351 Abstracts Collection – Information processing, rational belief change and social interaction

Authors: Giacomo Bonanno, James Delgrande, and Hans Rott

Published in: Dagstuhl Seminar Proceedings, Volume 9351, Information processing, rational belief change and social interaction (2009)

Abstract
From 23.08. to 27.08.2009, the Dagstuhl Seminar 09351 ``Information processing, rational belief change and social interaction '' was held in Schloss Dagstuhl~--~Leibniz Center for Informatics. During the seminar, several participants presented their current research, and ongoing work and open problems were discussed. Abstracts of the presentations given during the seminar as well as abstracts of seminar results and ideas are put together in this paper. The first section describes the seminar topics and goals in general. Links to extended abstracts or full papers are provided, if available.
Cite as

Giacomo Bonanno, James Delgrande, and Hans Rott. 09351 Abstracts Collection – Information processing, rational belief change and social interaction. In Information processing, rational belief change and social interaction. Dagstuhl Seminar Proceedings, Volume 9351, pp. 1-14, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{bonanno_et_al:DagSemProc.09351.1,
  author =	{Bonanno, Giacomo and Delgrande, James and Rott, Hans},
  title =	{{09351 Abstracts Collection – Information processing, rational belief change and social interaction}},
  booktitle =	{Information processing, rational belief change and social interaction},
  pages =	{1--14},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2009},
  volume =	{9351},
  editor =	{Giacomo Bonanno and James Delgrande 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.09351.1},
  URN =		{urn:nbn:de:0030-drops-22343},
  doi =		{10.4230/DagSemProc.09351.1},
  annote =	{Keywords: Social software, belief revision, conditionals, social choice, game theory, contraction, update, argumentation, preference aggregation, agency, inform}
}
Document
DOI: 10.4230/DagSemProc.09351.2
09351 Executive Summary – Information processing, rational belief change and social interaction

Authors: Giacomo Bonanno, James Delgrande, and Hans Rott

Published in: Dagstuhl Seminar Proceedings, Volume 9351, Information processing, rational belief change and social interaction (2009)

Abstract
From August 23, 2009 to August 27, 2009, the Dagstuhl Seminar 09351 "Information processing, rational belief change and social interaction" was held at the International Conference and Research Center (IBFI), Schloss Dagstuhl. During the seminar, several participants presented their current research, and ongoing work and open problems were discussed. Abstracts of the presentations given during the seminar as well as abstracts of seminar results and ideas are put together in these Proceedings. The Executive Summary describes the seminar topics and goals in general and contains the program of the workshop. Links to extended abstracts or full papers are provided, if available.
Cite as

Giacomo Bonanno, James Delgrande, and Hans Rott. 09351 Executive Summary – Information processing, rational belief change and social interaction. In Information processing, rational belief change and social interaction. Dagstuhl Seminar Proceedings, Volume 9351, pp. 1-6, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{bonanno_et_al:DagSemProc.09351.2,
  author =	{Bonanno, Giacomo and Delgrande, James and Rott, Hans},
  title =	{{09351 Executive Summary – Information processing, rational belief change and social interaction}},
  booktitle =	{Information processing, rational belief change and social interaction},
  pages =	{1--6},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2009},
  volume =	{9351},
  editor =	{Giacomo Bonanno and James Delgrande 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.09351.2},
  URN =		{urn:nbn:de:0030-drops-22273},
  doi =		{10.4230/DagSemProc.09351.2},
  annote =	{Keywords: Social software, belief revision, conditionals, social choice, game theory, contraction, update, argumentation, preference aggregation, agency, inform}
}
Document
DOI: 10.4230/DagSemProc.09351.7
Revealed preference, iterated belief revision and dynamic games

Authors: Giacomo Bonanno

Published in: Dagstuhl Seminar Proceedings, Volume 9351, Information processing, rational belief change and social interaction (2009)

Abstract
In previous work (G. Bonanno, Rational choice and AGM belief revision, Artificial Intelligence, 2009) a semantics for AGM belief revision was proposed based on choice frames, borrowed from the rational choice literature. In this paper we discuss how to use choice frames to analyze extensive-form games. Given an extensive form with perfect recall, a choice frame can be used to represent a player's initial beliefs and her disposition to change those beliefs when she is informed that it is her turn to move. When some players move more than once along some play of the game, the issue of iterated belief revision arises. We provide a semantics for iterated belief revision in terms of choice frames and provide an outline of how to use choice frames to analyze solution concepts for extensive-form games.
Cite as

Giacomo Bonanno. Revealed preference, iterated belief revision and dynamic games. In Information processing, rational belief change and social interaction. Dagstuhl Seminar Proceedings, Volume 9351, pp. 1-10, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{bonanno:DagSemProc.09351.7,
  author =	{Bonanno, Giacomo},
  title =	{{Revealed preference, iterated belief revision and dynamic games}},
  booktitle =	{Information processing, rational belief change and social interaction},
  pages =	{1--10},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2009},
  volume =	{9351},
  editor =	{Giacomo Bonanno and James Delgrande 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.09351.7},
  URN =		{urn:nbn:de:0030-drops-22326},
  doi =		{10.4230/DagSemProc.09351.7},
  annote =	{Keywords: Choice function, AGM belief revision, extensive-form game, iterated belief revision}
}
Document
DOI: 10.4230/DagSemProc.07351.1
07351 Abstracts Collection – Formal Models of Belief Change in Rational Agents

Authors: Giacomo Bonanno, James Delgrande, Jérôme Lang, and Hans Rott

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

Abstract
From 26.08. to 30.08.2007, the Dagstuhl Seminar 07351 ``Formal Models of Belief Change in Rational Agents'' was held in the International Conference and Research Center (IBFI), Schloss Dagstuhl. During the seminar, several participants presented their current research, and ongoing work and open problems were discussed. Abstracts of the presentations given during the seminar as well as abstracts of seminar results and ideas are put together in this paper. The first section describes the seminar topics and goals in general. Links to extended abstracts or full papers are provided, if available.
Cite as

Giacomo Bonanno, James Delgrande, Jérôme Lang, and Hans Rott. 07351 Abstracts Collection – Formal Models of Belief Change in Rational Agents. In Formal Models of Belief Change in Rational Agents. Dagstuhl Seminar Proceedings, Volume 7351, pp. 1-18, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{bonanno_et_al:DagSemProc.07351.1,
  author =	{Bonanno, Giacomo and Delgrande, James and Lang, J\'{e}r\^{o}me and Rott, Hans},
  title =	{{07351 Abstracts Collection – Formal Models of Belief Change in Rational Agents}},
  booktitle =	{Formal Models of Belief Change in Rational Agents},
  pages =	{1--18},
  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.07351.1},
  URN =		{urn:nbn:de:0030-drops-12414},
  doi =		{10.4230/DagSemProc.07351.1},
  annote =	{Keywords: Belief change, rational agents, information economy, information processing}
}
Document
DOI: 10.4230/DagSemProc.07351.2
07351 Executive Summary – Formal Models of Belief Change in Rational Agents

Authors: Giacomo Bonanno, James Delgrande, Jérôme Lang, and Hans Rott

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

Abstract
From August 26, 2007 to August 30, 2007, the Dagstuhl Seminar 07351 "Formal Models of Belief Change in Rational Agents" was held at the International Conference and Research Center (IBFI), Schloss Dagstuhl. During the seminar, several participants presented their current research, and ongoing work and open problems were discussed. The Executive Summary describes the seminar topics and goals in general. Abstracts of the presentations given during the seminar as well as abstracts of seminar results and ideas are put together in the Proceedings. Links to extended abstracts or full papers are provided, if available.
Cite as

Giacomo Bonanno, James Delgrande, Jérôme Lang, and Hans Rott. 07351 Executive Summary – Formal Models of Belief Change in Rational Agents. In Formal Models of Belief Change in Rational Agents. Dagstuhl Seminar Proceedings, Volume 7351, pp. 1-6, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{bonanno_et_al:DagSemProc.07351.2,
  author =	{Bonanno, Giacomo and Delgrande, James and Lang, J\'{e}r\^{o}me and Rott, Hans},
  title =	{{07351 Executive Summary – Formal Models of Belief Change in Rational Agents}},
  booktitle =	{Formal Models of Belief Change in Rational Agents},
  pages =	{1--6},
  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.07351.2},
  URN =		{urn:nbn:de:0030-drops-12018},
  doi =		{10.4230/DagSemProc.07351.2},
  annote =	{Keywords: Belief revision, iterated belief revision, update, merging, dynamic logic, epistemic logic,conditionals, social choice, game theory}
}
Document
DOI: 10.4230/DagSemProc.07351.20
Semantic structures for one-stage and iterated belief revision

Authors: Giacomo Bonanno

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

Abstract
Semantic structures for belief revision and iterated belief revision are proposed. We start with one-stage revision structures that generalize the notion of choice function from rational choice theory. A correspondence between these one-stage structures and AGM belief revision functions is established. We then add branching time and consider more general structures that accommodate iterated revision. AGM temporal belief revision structures are defined and a syntactic axiomatization is provided.
Cite as

Giacomo Bonanno. Semantic structures for one-stage and iterated belief revision. 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{bonanno:DagSemProc.07351.20,
  author =	{Bonanno, Giacomo},
  title =	{{Semantic structures for one-stage and iterated belief revision}},
  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.07351.20},
  URN =		{urn:nbn:de:0030-drops-12052},
  doi =		{10.4230/DagSemProc.07351.20},
  annote =	{Keywords: Iterated belief revision, choice functions, Kripke semantics, branching time, modal logic}
}
Document
DOI: 10.4230/DagSemProc.05321.1
05321 – Panel on belief change

Authors: Isaac Levi, Giacomo Bonanno, Bernard Walliser, Didier Dubois, Hans Rott, James Delgrande, and Jérôme Lang

Published in: Dagstuhl Seminar Proceedings, Volume 5321, Belief Change in Rational Agents: Perspectives from Artificial Intelligence, Philosophy, and Economics (2005)

Abstract
This document gathers the panelists' contribution.
Cite as

Isaac Levi, Giacomo Bonanno, Bernard Walliser, Didier Dubois, Hans Rott, James Delgrande, and Jérôme Lang. 05321 – Panel on belief change. In Belief Change in Rational Agents: Perspectives from Artificial Intelligence, Philosophy, and Economics. Dagstuhl Seminar Proceedings, Volume 5321, pp. 1-12, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2005)

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@InProceedings{levi_et_al:DagSemProc.05321.1,
  author =	{Levi, Isaac and Bonanno, Giacomo and Walliser, Bernard and Dubois, Didier and Rott, Hans and Delgrande, James and Lang, J\'{e}r\^{o}me},
  title =	{{05321 – Panel on belief change}},
  booktitle =	{Belief Change in Rational Agents: Perspectives from Artificial Intelligence, Philosophy, and Economics},
  pages =	{1--12},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2005},
  volume =	{5321},
  editor =	{James Delgrande and Jerome Lang and Hans Rott and Jean-Marc Tallon},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.05321.1},
  URN =		{urn:nbn:de:0030-drops-3580},
  doi =		{10.4230/DagSemProc.05321.1},
  annote =	{Keywords: Belief revision, iterated belief revision, update, merging, dynamic logic, possibility theory, conditionals, social choice, distance, complexity}
}
Document
DOI: 10.4230/DagSemProc.05321.4
A simple modal logic for belief revision

Authors: Giacomo Bonanno

Published in: Dagstuhl Seminar Proceedings, Volume 5321, Belief Change in Rational Agents: Perspectives from Artificial Intelligence, Philosophy, and Economics (2005)

Abstract
I propose a modal logic for belief revision based on three operators representing initial beliefs, information and revised beliefs. Three axioms are put forward that express three simple principles: (1) if the agent is informed of something that he considered possible initially, then he incorporates the information in his revised beliefs, (2) if the information received is not surprising then all previous beliefs are maintained (although new beliefs may be added) and (3) any new belief must be deducible from the initial beliefs and the information received. I show that these three axioms characterize the qualitative content of Bayes' rule. I also construct a logic which is sound and complete with respect to the class of frames that satisfy the qualitative Bayes rule. Some interesting theorems are derived for extensions of this logic, for example that the agent initially believes that he later will believe A if and only if he already believes A to start with. I then extend the framework to deal with iterated belief revision and the iterated version of Bayes rule.
Cite as

Giacomo Bonanno. A simple modal logic for belief revision. In Belief Change in Rational Agents: Perspectives from Artificial Intelligence, Philosophy, and Economics. Dagstuhl Seminar Proceedings, Volume 5321, pp. 1-8, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2005)

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@InProceedings{bonanno:DagSemProc.05321.4,
  author =	{Bonanno, Giacomo},
  title =	{{A simple modal logic for belief revision}},
  booktitle =	{Belief Change in Rational Agents: Perspectives from Artificial Intelligence, Philosophy, and Economics},
  pages =	{1--8},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2005},
  volume =	{5321},
  editor =	{James Delgrande and Jerome Lang and Hans Rott and Jean-Marc Tallon},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.05321.4},
  URN =		{urn:nbn:de:0030-drops-3302},
  doi =		{10.4230/DagSemProc.05321.4},
  annote =	{Keywords: Belief revision, information, Bayes' rule, iterated revision}
}
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