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Documents authored by Lang, Jérôme

Document
DOI: 10.4230/DagRep.6.6.10
Fair Division (Dagstuhl Seminar 16232)

Authors: Yonatan Aumann, Jérôme Lang, and Ariel D. Procaccia

Published in: Dagstuhl Reports, Volume 6, Issue 6 (2016)

Abstract
This report documents the program and the outcomes of Dagstuhl Seminar 16232 "Fair Division". The seminar was composed of technical sessions with regular talks, and discussion sessions distributed over the full week.
Cite as

Yonatan Aumann, Jérôme Lang, and Ariel D. Procaccia. Fair Division (Dagstuhl Seminar 16232). In Dagstuhl Reports, Volume 6, Issue 6, pp. 10-25, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2016)

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@Article{aumann_et_al:DagRep.6.6.10,
  author =	{Aumann, Yonatan and Lang, J\'{e}r\^{o}me and Procaccia, Ariel D.},
  title =	{{Fair Division (Dagstuhl Seminar 16232)}},
  pages =	{10--25},
  journal =	{Dagstuhl Reports},
  ISSN =	{2192-5283},
  year =	{2016},
  volume =	{6},
  number =	{6},
  editor =	{Aumann, Yonatan and Lang, J\'{e}r\^{o}me and Procaccia, Ariel D.},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagRep.6.6.10},
  URN =		{urn:nbn:de:0030-drops-67255},
  doi =		{10.4230/DagRep.6.6.10},
  annote =	{Keywords: cake cutting, computational social choice, envy-freeness, fair division}
}
Document
DOI: 10.4230/DagSemProc.07431.1
07431 Abstracts Collection – Computational Issues in Social Choice

Authors: Ulle Endriss, Jérôme Lang, Francesca Rossi, and Tuomas Sandholm

Published in: Dagstuhl Seminar Proceedings, Volume 7431, Computational Issues in Social Choice (2007)

Abstract
From the 21st to the 26th of October 2007, the Dagstuhl Seminar 07431 on ``Computational Issues in Social Choice'' was held at the International Conference and Research Center (IBFI), Schloss Dagstuhl. During the seminar, several participants presented their recent research, and ongoing work and open problems were discussed. The abstracts of the talks given during the seminar are collected in this paper. The first section summarises the seminar topics and goals in general. Links to full papers are provided where available.
Cite as

Ulle Endriss, Jérôme Lang, Francesca Rossi, and Tuomas Sandholm. 07431 Abstracts Collection – Computational Issues in Social Choice. In Computational Issues in Social Choice. Dagstuhl Seminar Proceedings, Volume 7431, pp. 1-19, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{endriss_et_al:DagSemProc.07431.1,
  author =	{Endriss, Ulle and Lang, J\'{e}r\^{o}me and Rossi, Francesca and Sandholm, Tuomas},
  title =	{{07431 Abstracts Collection – Computational Issues in Social Choice}},
  booktitle =	{Computational Issues in Social Choice},
  pages =	{1--19},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{7431},
  editor =	{Ulle Endriss and J\'{e}r\^{o}me Lang and Francesca Rossi and Tuomas Sandholm},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.07431.1},
  URN =		{urn:nbn:de:0030-drops-12736},
  doi =		{10.4230/DagSemProc.07431.1},
  annote =	{Keywords: Computational social choice, voting theory, fair division, mechanism design, coalition formation, complexity theory, preference representation, algorithms}
}
Document
DOI: 10.4230/DagSemProc.07431.2
07431 Executive Summary – Computational Issues in Social Choice

Authors: Ulle Endriss, Jérôme Lang, Francesca Rossi, and Tuomas Sandholm

Published in: Dagstuhl Seminar Proceedings, Volume 7431, Computational Issues in Social Choice (2007)

Abstract
Computational social choice is an interdisciplinary field of study at the interface of social choice theory and computer science, with knowledge flowing in either direction. On the one hand, computational social choice is concerned with importing concepts and procedures from social choice theory for solving questions that arise in computer science and AI application domains. This is typically the case for managing societies of autonomous agents, which calls for negotiation and voting procedures. On the other hand, computational social choice is concerned with importing notions and methods from computer science for solving questions originally stemming from social choice, for instance by providing new perspectives on the problem of manipulation and control in elections. This Dagstuhl Seminar has been devoted to the presentation of recent results and an exchange of ideas in this growing research field.
Cite as

Ulle Endriss, Jérôme Lang, Francesca Rossi, and Tuomas Sandholm. 07431 Executive Summary – Computational Issues in Social Choice. In Computational Issues in Social Choice. Dagstuhl Seminar Proceedings, Volume 7431, pp. 1-3, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{endriss_et_al:DagSemProc.07431.2,
  author =	{Endriss, Ulle and Lang, J\'{e}r\^{o}me and Rossi, Francesca and Sandholm, Tuomas},
  title =	{{07431 Executive Summary – Computational Issues in Social Choice}},
  booktitle =	{Computational Issues in Social Choice},
  pages =	{1--3},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{7431},
  editor =	{Ulle Endriss and J\'{e}r\^{o}me Lang and Francesca Rossi and Tuomas Sandholm},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.07431.2},
  URN =		{urn:nbn:de:0030-drops-12749},
  doi =		{10.4230/DagSemProc.07431.2},
  annote =	{Keywords: Computational social choice, voting theory, fair division, mechanism design, coalition formation, complexity theory, preference representation, algorithms}
}
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.07351.13
From belief change to preference change

Authors: Jérôme Lang and Leendert van der Torre

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

Abstract
There is a huge literature on belief change. In contrast, preference change has been considered only in a few recent papers. There are reasons for that: while there is to some extent a general agreement about the very meaning of belief change, this is definitely not so for preference change. We discuss here the possible meanings of preference change, arguing that we should at least distinguish between four paradigms: preferences evolving after some new fact has been learned, preferences evolving as a result of an evolution of the world, preferences evolving after the rational agent itself evolves, and preferences evolving per se. We then develop in more detail the first of these four paradigms (which we think is the most natural). We give some natural properties that we think preference change should fulfill and define several families of preference change operators, parameterized by a revision function on epistemic states and a semantics for interpreting preferences over formulas.
Cite as

Jérôme Lang and Leendert van der Torre. From belief change to preference change. In Formal Models of Belief Change in Rational Agents. Dagstuhl Seminar Proceedings, Volume 7351, pp. 1-8, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{lang_et_al:DagSemProc.07351.13,
  author =	{Lang, J\'{e}r\^{o}me and van der Torre, Leendert},
  title =	{{From belief change to preference change}},
  booktitle =	{Formal Models of Belief Change in Rational Agents},
  pages =	{1--8},
  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.07351.13},
  URN =		{urn:nbn:de:0030-drops-12099},
  doi =		{10.4230/DagSemProc.07351.13},
  annote =	{Keywords: Beliefs, preferences, decision making, agents, preference revision}
}
Document
DOI: 10.4230/DagSemProc.05321.2
05321 Abstracts Collection – Belief Change in Rational Agents: Perspectives from Artificial Intelligence, Philosophy, and Economics

Authors: James Delgrande, Jérôme Lang, Hans Rott, and Jean-Marc Tallon

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

Abstract
From 07.08.05 to 12.08.05, the Dagstuhl Seminar 05321 ``Belief Change in Rational Agents: Perspectives from Artificial Intelligence, Philosophy, and Economics'' 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

James Delgrande, Jérôme Lang, Hans Rott, and Jean-Marc Tallon. 05321 Abstracts Collection – Belief Change in Rational Agents: Perspectives from Artificial Intelligence, Philosophy, and Economics. In Belief Change in Rational Agents: Perspectives from Artificial Intelligence, Philosophy, and Economics. Dagstuhl Seminar Proceedings, Volume 5321, pp. 1-16, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2005)

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@InProceedings{delgrande_et_al:DagSemProc.05321.2,
  author =	{Delgrande, James and Lang, J\'{e}r\^{o}me and Rott, Hans and Tallon, Jean-Marc},
  title =	{{05321 Abstracts Collection – Belief Change in Rational Agents: Perspectives from Artificial Intelligence, Philosophy, and Economics}},
  booktitle =	{Belief Change in Rational Agents: Perspectives from Artificial Intelligence, Philosophy, and Economics},
  pages =	{1--16},
  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.05321.2},
  URN =		{urn:nbn:de:0030-drops-3628},
  doi =		{10.4230/DagSemProc.05321.2},
  annote =	{Keywords: Belief revision, iterated belief revision, update, merging, dynamic logic, possibility theory, conditionals, social choice, distance, complexity}
}
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.05321.3
05321 Executive Summary – Belief Change in Rational Agents: Perspectives from Artificial Intelligence, Philosophy, and Economics

Authors: James Delgrande, Jérôme Lang, Hans Rott, and Jean-Marc Tallon

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

Abstract
The area of belief change studies how a rational agent may maintain its beliefs when obtaining or perceiving new information about the environment. This new information could include properties of the actual world, occurrences of events, and, in the case of multiple agents, actions performed by other agents, as well as the beliefs and preferences of other agents. Not surprisingly, this area has been of interest to researchers in different communities. The initial research in belief change came from the philosophical community, wherein belief change was studied generally from a normative point of view (that is, providing axiomatic foundations about how rational agents should behave with respect to the information flux). Subsequently, computer scientists, especially in the artificial intelligence (AI) and the database (DB) communities, have been building on these results. Belief change, as studied by computer scientists, not only pays attention to behavioural properties characterising evolving databases or knowledge bases, but must also address computational issues such as how to represent beliefs states in a concise way and how to efficiently compute the revision of a belief state. More recently, the economics and game theory community, in particular the emerging field of cognitive economics, has become active in belief change research, adopting a normative point of view, like philosophers, but paying more attention to the ''cognitive plausibility'' or ''fitness'' of the belief change operators. The goal of the seminar was to bring together researchers from these areas, allowing for the identification and addressing of problems of common interest in this area, as well as providing a means to explore ways in which one area may contribute to another.
Cite as

James Delgrande, Jérôme Lang, Hans Rott, and Jean-Marc Tallon. 05321 Executive Summary – Belief Change in Rational Agents: Perspectives from Artificial Intelligence, Philosophy, and Economics. In Belief Change in Rational Agents: Perspectives from Artificial Intelligence, Philosophy, and Economics. Dagstuhl Seminar Proceedings, Volume 5321, pp. 1-5, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2005)

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@InProceedings{delgrande_et_al:DagSemProc.05321.3,
  author =	{Delgrande, James and Lang, J\'{e}r\^{o}me and Rott, Hans and Tallon, Jean-Marc},
  title =	{{05321 Executive Summary – Belief Change in Rational Agents: Perspectives from Artificial Intelligence, Philosophy, and Economics}},
  booktitle =	{Belief Change in Rational Agents: Perspectives from Artificial Intelligence, Philosophy, and Economics},
  pages =	{1--5},
  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.05321.3},
  URN =		{urn:nbn:de:0030-drops-3577},
  doi =		{10.4230/DagSemProc.05321.3},
  annote =	{Keywords: Belief revision, iterated belief revision, update, merging, dynamic logic, possibility theory, conditionals, social choice, distance, complexity}
}
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