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Norms in MAS: Definitions and Related Concepts

Authors: Tina Balke, Célia da Costa Pereira, Frank Dignum, Emiliano Lorini, Antonino Rotolo, Wamberto Vasconcelos, and Serena Villata

Published in: Dagstuhl Follow-Ups, Volume 4, Normative Multi-Agent Systems (2013)

Abstract

In this chapter we provide an introductory presentation of normative multi-agent systems (nMAS). The key idea of the chapter is that any definition of nMAS should preliminarily clarify meaning, scope, and function of the concept of norm. On account of this idea, we focus on three definitions and some related requirements for nMAS. For each of such definitions we propose some guidelines for developing nMAS. Second, we suggest how to relate the concept of nMAS to different conceptions of norms and how norms can be used within the systems. Finally, we identify some specific issues that open research questions or that exhibit interesting overlaps with other disciplines.

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Tina Balke, Célia da Costa Pereira, Frank Dignum, Emiliano Lorini, Antonino Rotolo, Wamberto Vasconcelos, and Serena Villata. Norms in MAS: Definitions and Related Concepts. In Normative Multi-Agent Systems. Dagstuhl Follow-Ups, Volume 4, pp. 1-31, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2013)

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@InCollection{balke_et_al:DFU.Vol4.12111.1,
  author =	{Balke, Tina and da Costa Pereira, C\'{e}lia and Dignum, Frank and Lorini, Emiliano and Rotolo, Antonino and Vasconcelos, Wamberto and Villata, Serena},
  title =	{{Norms in MAS: Definitions and Related Concepts}},
  booktitle =	{Normative Multi-Agent Systems},
  pages =	{1--31},
  series =	{Dagstuhl Follow-Ups},
  ISBN =	{978-3-939897-51-4},
  ISSN =	{1868-8977},
  year =	{2013},
  volume =	{4},
  editor =	{Andrighetto, Giulia and Governatori, Guido and Noriega, Pablo and van der Torre, Leendert W. N.},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DFU.Vol4.12111.1},
  URN =		{urn:nbn:de:0030-drops-39983},
  doi =		{10.4230/DFU.Vol4.12111.1},
  annote =	{Keywords: Norms, MAS}
}

Document

DOI: 10.4230/DagSemProc.09121.13

Distrust is not Always the Complement of Trust (Position Paper)

Authors: Celia da Costa Pereira

Published in: Dagstuhl Seminar Proceedings, Volume 9121, Normative Multi-Agent Systems (2009)

Abstract

We believe that distrust can be as important as trust when agents are making a decision. An agent may not trust a source because of lack of positive evidence, but this does not necessarily mean the agent distrusts the source. Trust and distrust have to be considered as two separate concepts which can coexist. We are aware that an adequate way to take this fact into account is by considering explicitly not only the agent's degree of trust in a source but also its independent degree of distrust. Explicitly taking distrust into account allows us to mark a clear difference between the distinct notions of negative trust and insufficient trust. More precisely, it is possible, unlike in approaches where only trust is explicitly accounted for, to "weigh" differently information from helpful, malicious, unknown, or neutral sources.

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Celia da Costa Pereira. Distrust is not Always the Complement of Trust (Position Paper). In Normative Multi-Agent Systems. Dagstuhl Seminar Proceedings, Volume 9121, pp. 1-8, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{dacostapereira:DagSemProc.09121.13,
  author =	{da Costa Pereira, Celia},
  title =	{{Distrust is not Always the Complement of Trust (Position Paper)}},
  booktitle =	{Normative Multi-Agent Systems},
  pages =	{1--8},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2009},
  volume =	{9121},
  editor =	{Guido Boella and Pablo Noriega and Gabriella Pigozzi and Harko Verhagen},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09121.13},
  URN =		{urn:nbn:de:0030-drops-19154},
  doi =		{10.4230/DagSemProc.09121.13},
  annote =	{Keywords: Trust, Distrust, Decision Making}
}

Document

DOI: 10.4230/DagSemProc.07122.9

Choosing Your Beliefs

Authors: Guido Boella, Célia da Costa Pereira, Gabriella Pigozzi, Andrea Tettamanzi, and Leendert van der Torre

Published in: Dagstuhl Seminar Proceedings, Volume 7122, Normative Multi-agent Systems (2007)

Abstract

This paper presents and discusses a novel approach to indeterministic belief revision. An indeterministic belief revision operator assumes that, when an agent is confronted with a new piece of information, it can revise its belief sets in more than one way. We define a rational agent not only in terms of what it believes but also of what it desires and wants to achieve. Hence, we propose that the agent's goals play a role in the choice of (possibly) one of the several available revision options. Properties of the new belief revision mechanism are also investigated.

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Guido Boella, Célia da Costa Pereira, Gabriella Pigozzi, Andrea Tettamanzi, and Leendert van der Torre. Choosing Your Beliefs. In Normative Multi-agent Systems. Dagstuhl Seminar Proceedings, Volume 7122, pp. 1-18, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{boella_et_al:DagSemProc.07122.9,
  author =	{Boella, Guido and da Costa Pereira, C\'{e}lia and Pigozzi, Gabriella and Tettamanzi, Andrea and van der Torre, Leendert},
  title =	{{Choosing Your Beliefs}},
  booktitle =	{Normative Multi-agent Systems},
  pages =	{1--18},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{7122},
  editor =	{Guido Boella and Leon van der Torre and Harko Verhagen},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.07122.9},
  URN =		{urn:nbn:de:0030-drops-9386},
  doi =		{10.4230/DagSemProc.07122.9},
  annote =	{Keywords: Rational agents, indeterministic belief revision, qualitative decision theory}
}

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Documents authored by da Costa Pereira, Célia

Norms in MAS: Definitions and Related Concepts

Abstract

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Distrust is not Always the Complement of Trust (Position Paper)

Abstract

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Choosing Your Beliefs

Abstract

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