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Documents authored by Brewka, Gerhard

Document
DOI: 10.4230/DagSemProc.07351.10
Dynamic Interactions Between Goals and Beliefs

Authors: Steven Shapiro and Gerhard Brewka

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

Abstract
Shapiro et al. [2005], presented a framework for representing goal change in the situation calculus. In that framework, agents adopt a goal when requested to do so (by some agent reqr), and they remain committed to the goal unless the request is cancelled by reqr. A common assumption in the agent theory literature, is that achievement goals that are believed to be impossible to achieve should be dropped. In this paper, we incorporate this assumption into Shapiro et al.'s framework, however we go a step further. If an agent believes a goal is impossible to achieve, it is dropped. However, if the agent later believes that it was mistaken about the impossibility of achieving the goal, the agent might readopt the goal. In addition, we consider an agent's goals as a whole when making them compatible with their beliefs, rather than considering them individually.
Cite as

Steven Shapiro and Gerhard Brewka. Dynamic Interactions Between Goals and Beliefs. In Formal Models of Belief Change in Rational Agents. Dagstuhl Seminar Proceedings, Volume 7351, pp. 1-9, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{shapiro_et_al:DagSemProc.07351.10,
  author =	{Shapiro, Steven and Brewka, Gerhard},
  title =	{{Dynamic Interactions Between Goals and Beliefs}},
  booktitle =	{Formal Models of Belief Change in Rational Agents},
  pages =	{1--9},
  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.07351.10},
  URN =		{urn:nbn:de:0030-drops-11995},
  doi =		{10.4230/DagSemProc.07351.10},
  annote =	{Keywords: Goal Change, Belief Change, Situation Calculus}
}
Document
DOI: 10.4230/DagSemProc.05171.1
05171 Abstracts Collection – Nonmonotonic Reasoning, Answer Set Programming and Constraints

Authors: Gerhard Brewka, Ilkka Niemelä, Torsten Schaub, Miroslaw Truszczynski, and Joost Vennekens

Published in: Dagstuhl Seminar Proceedings, Volume 5171, Nonmonotonic Reasoning, Answer Set Programming and Constraints (2005)

Abstract
From 24.04.05 to 29.04.05, the Dagstuhl Seminar 05171 ``Nonmonotonic Reasoning, Answer Set Programming and Constraints'' 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

Gerhard Brewka, Ilkka Niemelä, Torsten Schaub, Miroslaw Truszczynski, and Joost Vennekens. 05171 Abstracts Collection – Nonmonotonic Reasoning, Answer Set Programming and Constraints. In Nonmonotonic Reasoning, Answer Set Programming and Constraints. Dagstuhl Seminar Proceedings, Volume 5171, pp. 1-23, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2005)

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@InProceedings{brewka_et_al:DagSemProc.05171.1,
  author =	{Brewka, Gerhard and Niemel\"{a}, Ilkka and Schaub, Torsten and Truszczynski, Miroslaw and Vennekens, Joost},
  title =	{{05171 Abstracts Collection – Nonmonotonic Reasoning, Answer Set Programming and Constraints}},
  booktitle =	{Nonmonotonic Reasoning, Answer Set Programming and Constraints},
  pages =	{1--23},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2005},
  volume =	{5171},
  editor =	{Gerhard Brewka and Ilkka Niemel\"{a} and Torsten Schaub and Miroslaw Truszczynski},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.05171.1},
  URN =		{urn:nbn:de:0030-drops-2690},
  doi =		{10.4230/DagSemProc.05171.1},
  annote =	{Keywords: Knowledge representation, nonmonotonic reasoning, logic programming, answer-set programming, constraints}
}
Document
DOI: 10.4230/DagSemProc.05171.2
05171 Executive Summary – Nonmonotonic Reasoning, Answer Set Programming and Constraints

Authors: Gerhard Brewka, Ilkka Niemelä, Torsten Schaub, and Miroslaw Truszczynski

Published in: Dagstuhl Seminar Proceedings, Volume 5171, Nonmonotonic Reasoning, Answer Set Programming and Constraints (2005)

Abstract
We provide a brief overview of the seminar and comment on most important research themes that emerged.
Cite as

Gerhard Brewka, Ilkka Niemelä, Torsten Schaub, and Miroslaw Truszczynski. 05171 Executive Summary – Nonmonotonic Reasoning, Answer Set Programming and Constraints. In Nonmonotonic Reasoning, Answer Set Programming and Constraints. Dagstuhl Seminar Proceedings, Volume 5171, pp. 1-2, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2005)

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@InProceedings{brewka_et_al:DagSemProc.05171.2,
  author =	{Brewka, Gerhard and Niemel\"{a}, Ilkka and Schaub, Torsten and Truszczynski, Miroslaw},
  title =	{{05171 Executive Summary – Nonmonotonic Reasoning, Answer Set Programming and Constraints}},
  booktitle =	{Nonmonotonic Reasoning, Answer Set Programming and Constraints},
  pages =	{1--2},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2005},
  volume =	{5171},
  editor =	{Gerhard Brewka and Ilkka Niemel\"{a} and Torsten Schaub and Miroslaw Truszczynski},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.05171.2},
  URN =		{urn:nbn:de:0030-drops-2607},
  doi =		{10.4230/DagSemProc.05171.2},
  annote =	{Keywords: Knowledge representation, nonmonotonic reasoning, logic programming, answer-set programming, constraints}
}
Document
DOI: 10.4230/DagSemRep.354
Nonmonotonic Reasoning, Answer Set Programming and Constraints (Dagstuhl Seminar 02381)

Authors: Gerhard Brewka, Ilkka Niemelä, Torsten Schaub, and Miroslaw Truszczynski

Published in: Dagstuhl Seminar Reports. Dagstuhl Seminar Reports, Volume 1 (2021)

Abstract
Cite as

Gerhard Brewka, Ilkka Niemelä, Torsten Schaub, and Miroslaw Truszczynski. Nonmonotonic Reasoning, Answer Set Programming and Constraints (Dagstuhl Seminar 02381). Dagstuhl Seminar Report 354, pp. 1-18, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2003)

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@TechReport{brewka_et_al:DagSemRep.354,
  author =	{Brewka, Gerhard and Niemel\"{a}, Ilkka and Schaub, Torsten and Truszczynski, Miroslaw},
  title =	{{Nonmonotonic Reasoning, Answer Set Programming and Constraints (Dagstuhl Seminar 02381)}},
  pages =	{1--18},
  ISSN =	{1619-0203},
  year =	{2003},
  type = 	{Dagstuhl Seminar Report},
  number =	{354},
  institution =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemRep.354},
  URN =		{urn:nbn:de:0030-drops-152348},
  doi =		{10.4230/DagSemRep.354},
}
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