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Dagstuhl Seminar Proceedings, Volume 9351

Publication Details

  • published at: 2009-11-04
  • Publisher: Schloss Dagstuhl – Leibniz-Zentrum für Informatik

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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

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.
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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-dev.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

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.
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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-dev.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.09351.3
Awareness and forgetting of facts and agents

Authors: Hans Van Ditmarsch and Tim French

Abstract
We propose various logical semantics for change of awareness. The setting is that of multiple agents that may become aware of facts or other agents, or forget about them. We model these dynamics by quantifying over propositional variables and agent variables, in a multi-agent epistemic language with awareness operators, employing a notion of bisimulation with a clause for `same awareness'. The quantification is over all different ways in which an agent can become aware (or forget). Logics for change of awareness combine well with logics for informational change, as when a public announcement simultaneously makes you aware of an issue (`a plane just crashed on Schiphol Airport').
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Hans Van Ditmarsch and Tim French. Awareness and forgetting of facts and agents. In Information processing, rational belief change and social interaction. Dagstuhl Seminar Proceedings, Volume 9351, pp. 1-8, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{vanditmarsch_et_al:DagSemProc.09351.3,
  author =	{Van Ditmarsch, Hans and French, Tim},
  title =	{{Awareness and forgetting of facts and agents}},
  booktitle =	{Information processing, rational belief change and social interaction},
  pages =	{1--8},
  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-dev.dagstuhl.de/entities/document/10.4230/DagSemProc.09351.3},
  URN =		{urn:nbn:de:0030-drops-22286},
  doi =		{10.4230/DagSemProc.09351.3},
  annote =	{Keywords: Awareness, knowledge, multi-agent systems, dynamics}
}
Document
DOI: 10.4230/DagSemProc.09351.4
Deontic Epistemic stit Logic Distinguishing Modes of `Mens Rea'

Authors: Jan M. Broersen

Abstract
Most juridical systems contain the principle that an act is only unlaw- ful if the agent conducting the act has a `guilty mind' (`mens rea'). Dif- ferent law systems distinguish different modes of mens rea. For instance, American law distinguishes between `knowingly' performing a criminal act, `recklessness', `strict liability', etc. I will show we can formalize several of these categories. The formalism I use is a complete stit-logic featuring operators for stit-actions taking effect in `next' states, S5-knowledge op- erators and SDL-type obligation operators. The different modes of `mens rea' correspond to the violation conditions of different types of obligation definable in the logic.
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Jan M. Broersen. Deontic Epistemic stit Logic Distinguishing Modes of `Mens Rea'. In Information processing, rational belief change and social interaction. Dagstuhl Seminar Proceedings, Volume 9351, pp. 1-22, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{broersen:DagSemProc.09351.4,
  author =	{Broersen, Jan M.},
  title =	{{Deontic Epistemic stit Logic Distinguishing Modes of `Mens Rea'}},
  booktitle =	{Information processing, rational belief change and social interaction},
  pages =	{1--22},
  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-dev.dagstuhl.de/entities/document/10.4230/DagSemProc.09351.4},
  URN =		{urn:nbn:de:0030-drops-22296},
  doi =		{10.4230/DagSemProc.09351.4},
  annote =	{Keywords: Product update, agency, stit theory, knowingly doing}
}
Document
DOI: 10.4230/DagSemProc.09351.5
Epistemic Games in Modal Logic: Joint Actions, Knowledge and Preferences all together

Authors: Emiliano Lorini, François Schwarzentruber, and Andreas Herzig

Abstract
We present in this work a sound and complete modal logic called EDLA (Epistemic Dynamic Logic of Agency) integrating the concepts of joint action, preference and knowledge and enabling to reason about epistemic games in strategic form. We provide complexity results for EDLA. In the second part of the paper, we study in EDLA the epistemic and rationality conditions of some classical solution concepts like Nash equilibrium and Iterated Deletion of Strictly Dominated Strategies (IDSDS). In the last part of the paper we combine EDLA with Dynamic Epistemic Logic (DEL) in order to model epistemic game dynamics.
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Emiliano Lorini, François Schwarzentruber, and Andreas Herzig. Epistemic Games in Modal Logic: Joint Actions, Knowledge and Preferences all together. In Information processing, rational belief change and social interaction. Dagstuhl Seminar Proceedings, Volume 9351, pp. 1-20, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{lorini_et_al:DagSemProc.09351.5,
  author =	{Lorini, Emiliano and Schwarzentruber, Fran\c{c}ois and Herzig, Andreas},
  title =	{{Epistemic Games in Modal Logic: Joint Actions, Knowledge and Preferences all together}},
  booktitle =	{Information processing, rational belief change and social interaction},
  pages =	{1--20},
  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-dev.dagstuhl.de/entities/document/10.4230/DagSemProc.09351.5},
  URN =		{urn:nbn:de:0030-drops-22313},
  doi =		{10.4230/DagSemProc.09351.5},
  annote =	{Keywords: Modal logic, game theory, epistemic games}
}
Document
DOI: 10.4230/DagSemProc.09351.6
Interpreting Product Update as Reasoning about Observations and Meta-Observations

Authors: Jan M. Broersen

Abstract
In this brief note, I would like to suggest that it makes sense to reinterpret product update, as introduced by Baltag, Moss and Solecki, as a system to account for observations and metaobservations, where a meta-observation is an observation of an observation. Under this interpretation we also take products of action models with meta-action models. I deliberate on some possible consequences of this extension to the interpretation of product update.
Cite as

Jan M. Broersen. Interpreting Product Update as Reasoning about Observations and Meta-Observations. In Information processing, rational belief change and social interaction. Dagstuhl Seminar Proceedings, Volume 9351, pp. 1-3, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{broersen:DagSemProc.09351.6,
  author =	{Broersen, Jan M.},
  title =	{{Interpreting Product Update as Reasoning about Observations and Meta-Observations}},
  booktitle =	{Information processing, rational belief change and social interaction},
  pages =	{1--3},
  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-dev.dagstuhl.de/entities/document/10.4230/DagSemProc.09351.6},
  URN =		{urn:nbn:de:0030-drops-22333},
  doi =		{10.4230/DagSemProc.09351.6},
  annote =	{Keywords: Product update, agency, stit theory, knowingly doing}
}
Document
DOI: 10.4230/DagSemProc.09351.7
Revealed preference, iterated belief revision and dynamic games

Authors: Giacomo Bonanno

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.
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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-dev.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.09351.8
Speech acts as announcements

Authors: Nadine Guiraud, Andreas Herzig, and Emiliano Lorini

Abstract
Our aim is to use the logic of public announcements and more generally dynamic epistemic logics as a logic of speech acts. To that end we start from a simple multimodal logic of beliefs and goals (without common belief), and add public announcements. We suppose that announcements do not modify goals. We then consider several variants of speech acts of assertive and directive force and provide a modelling in terms of speech acts.
Cite as

Nadine Guiraud, Andreas Herzig, and Emiliano Lorini. Speech acts as announcements. In Information processing, rational belief change and social interaction. Dagstuhl Seminar Proceedings, Volume 9351, pp. 1-4, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{guiraud_et_al:DagSemProc.09351.8,
  author =	{Guiraud, Nadine and Herzig, Andreas and Lorini, Emiliano},
  title =	{{Speech acts as announcements}},
  booktitle =	{Information processing, rational belief change and social interaction},
  pages =	{1--4},
  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-dev.dagstuhl.de/entities/document/10.4230/DagSemProc.09351.8},
  URN =		{urn:nbn:de:0030-drops-22935},
  doi =		{10.4230/DagSemProc.09351.8},
  annote =	{Keywords: Logic of belief, logic of goals, speech act theory, dynamic epistemic logic, public announcements}
}
Document
DOI: 10.4230/DagSemProc.09351.9
Systematic judgment aggregators: An algebraic connection between social and logical structure

Authors: Daniel Eckert and Frederik Herzberg

Abstract
We present several results that show that systematic (complete) judgment aggregators can be viewed as both (2-valued) Boolean homomorphisms and as syntatic versions of reduced (ultra)products. Thereby, Arrovian judgment aggregators link the Boolean algebraic structures of (i) the set of coalitions (ii) the agenda, and (iii) the set of truth values of collective judgments. Since filters arise naturally in the context of Boolean algebras, these findings provide an explanation for the extraordinary effectiveness of the filter method in abstract aggregation theory.
Cite as

Daniel Eckert and Frederik Herzberg. Systematic judgment aggregators: An algebraic connection between social and logical structure. In Information processing, rational belief change and social interaction. Dagstuhl Seminar Proceedings, Volume 9351, pp. 1-12, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{eckert_et_al:DagSemProc.09351.9,
  author =	{Eckert, Daniel and Herzberg, Frederik},
  title =	{{Systematic judgment aggregators: An algebraic connection between social and logical structure}},
  booktitle =	{Information processing, rational belief change and social interaction},
  pages =	{1--12},
  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-dev.dagstuhl.de/entities/document/10.4230/DagSemProc.09351.9},
  URN =		{urn:nbn:de:0030-drops-22302},
  doi =		{10.4230/DagSemProc.09351.9},
  annote =	{Keywords: Judgment aggregation; social structure; Boolean homorphism; ultraproduct}
}

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  • Authors
  • B
  • Bonanno, Giacomo
  • Broersen, Jan M.
  • D
  • Delgrande, James
  • E
  • Eckert, Daniel
  • F
  • French, Tim
  • G
  • Guiraud, Nadine
  • H
  • Herzberg, Frederik
  • Herzig, Andreas
  • L
  • Lorini, Emiliano
  • R
  • Rott, Hans
  • S
  • Schwarzentruber, François
  • V
  • Van Ditmarsch, Hans

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