33 Search Results for "Pigozzi, Gabriella"

Document
DOI: 10.4230/DagRep.4.5.27
JA4AI – Judgment Aggregation for Artificial Intelligence (Dagstuhl Seminar 14202)

Authors: Franz Dietrich, Ulle Endriss, Davide Grossi, Gabriella Pigozzi, and Marija Slavkovik

Published in: Dagstuhl Reports, Volume 4, Issue 5 (2014)

Abstract
This report documents the programme and the outcomes of Dagstuhl Seminar 14202 on "Judgment Aggregation for Artificial Intelligence". Judgment aggregation is a new group decision-making theory that lies in the intersection of logic and social choice; it studies how to reach group decisions on several logically interconnected issues by aggregation of individual judgments. Until recently research in judgment aggregation was dominated by its originating context of philosophy, political science and law. Presently, however we are witnessing increasing work in judgment aggregation from researchers in computer science. Since researchers from such diverse disciplinary backgrounds working on judgment aggregation each publish within their own discipline with virtually no cross-discipline cooperation on concrete projects, it is essential that they are given an opportunity to connect to each other and become aware of the workings of the other side. This seminar has provided such an opportunity.
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Franz Dietrich, Ulle Endriss, Davide Grossi, Gabriella Pigozzi, and Marija Slavkovik. JA4AI – Judgment Aggregation for Artificial Intelligence (Dagstuhl Seminar 14202). In Dagstuhl Reports, Volume 4, Issue 5, pp. 27-39, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2014)

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@Article{dietrich_et_al:DagRep.4.5.27,
  author =	{Dietrich, Franz and Endriss, Ulle and Grossi, Davide and Pigozzi, Gabriella and Slavkovik, Marija},
  title =	{{JA4AI – Judgment Aggregation for Artificial Intelligence (Dagstuhl Seminar 14202)}},
  pages =	{27--39},
  journal =	{Dagstuhl Reports},
  ISSN =	{2192-5283},
  year =	{2014},
  volume =	{4},
  number =	{5},
  editor =	{Dietrich, Franz and Endriss, Ulle and Grossi, Davide and Pigozzi, Gabriella and Slavkovik, Marija},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagRep.4.5.27},
  URN =		{urn:nbn:de:0030-drops-46791},
  doi =		{10.4230/DagRep.4.5.27},
  annote =	{Keywords: Judgment Aggregation, Artificial Intelligence, Computational Social Choice, Collective Decision-making}
}
Document
DOI: 10.4230/DagSemProc.09121.1
09121 Abstracts Collection – Normative Multi-Agent Systems

Authors: Guido Boella, Pablo Noriega, and Gabriella Pigozzi

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

Abstract
From 15.03. to 20.03.2009, the Dagstuhl Seminar 09121 ``Normative Multi-Agent Systems '' 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.
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Guido Boella, Pablo Noriega, and Gabriella Pigozzi. 09121 Abstracts Collection – Normative Multi-Agent Systems. In Normative Multi-Agent Systems. Dagstuhl Seminar Proceedings, Volume 9121, pp. 1-17, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{boella_et_al:DagSemProc.09121.1,
  author =	{Boella, Guido and Noriega, Pablo and Pigozzi, Gabriella},
  title =	{{09121 Abstracts Collection – Normative Multi-Agent Systems}},
  booktitle =	{Normative Multi-Agent Systems},
  pages =	{1--17},
  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.09121.1},
  URN =		{urn:nbn:de:0030-drops-19229},
  doi =		{10.4230/DagSemProc.09121.1},
  annote =	{Keywords: Similarity-based clustering and classification, metric adaptation and kernel design, learning on graphs, spatiotemporal data}
}
Document
DOI: 10.4230/DagSemProc.09121.2
Normative Systems in Computer Science - Ten Guidelines for Normative Multiagent Systems

Authors: Guido Boella, Gabriella Pigozzi, and Leendert van der Torre

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

Abstract
In this paper we introduce and discuss ten guidelines for the use of normative systems in computer science. We adopt a multiagent sys- tems perspective, because norms are used to coordinate, organize, guide, regulate or control interaction among distributed autonomous systems. The first six guidelines are derived from the computer science literature. From the so-called ‘normchange’ definition of the first workshop on nor- mative multiagent systems in 2005 we derive the guidelines to motivate which definition of normative multiagent system is used, to make explicit why norms are a kind of (soft) constraints deserving special analysis, and to explain why and how norms can be changed at runtime. From the so-called ‘mechanism design’ definition of the second workshop on nor- mative multiagent systems in 2007 we derive the guidelines to discuss the use and role of norms as a mechanism in a game-theoretic setting, clarify the role of norms in the multiagent system, and to relate the no- tion of “norm” to the legal, social, or moral literature. The remaining four guidelines follow from the philosophical literature: use norms also to resolve dilemmas, and in general to coordinate, organize, guide, regulate or control interaction among agents, distinguish norms from obligations, prohibitions and permissions, use the deontic paradoxes only to illustrate the normative multiagent system, and consider regulative norms in rela- tion to other kinds of norms and other social-cognitive computer science concepts.
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Guido Boella, Gabriella Pigozzi, and Leendert van der Torre. Normative Systems in Computer Science - Ten Guidelines for Normative Multiagent Systems. In Normative Multi-Agent Systems. Dagstuhl Seminar Proceedings, Volume 9121, pp. 1-21, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{boella_et_al:DagSemProc.09121.2,
  author =	{Boella, Guido and Pigozzi, Gabriella and van der Torre, Leendert},
  title =	{{Normative Systems in Computer Science - Ten Guidelines for Normative Multiagent Systems}},
  booktitle =	{Normative Multi-Agent Systems},
  pages =	{1--21},
  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.09121.2},
  URN =		{urn:nbn:de:0030-drops-19029},
  doi =		{10.4230/DagSemProc.09121.2},
  annote =	{Keywords: Normative systems - Guidelines - Norms - Multiagent systems - Deontic logic}
}
Document
DOI: 10.4230/DagSemProc.09121.3
A categorization of simulation works on norms

Authors: Bastin Tony Roy Savarimuthu and Stephen Cranefield

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

Abstract
In multi-agent systems, software agents are modelled to possess characteristics and behaviour borrowed from human societies. Norms are expectations of behaviours of the agents in a society. Norms can be established in a society in different ways. In human societies, there are several types of norms such as moral norms, social norms and legal norms (laws). In artificial agent societies, the designers can impose these norms on the agents. Being autonomous, agents might not always follow the norms. Monitoring and controlling mechanisms should be in place to enforce norms. As the agents are autonomous, they themselves can evolve new norms while adapting to changing needs. In order to design and develop robust artificial agent societies, it is important to understand different approaches proposed by researchers by which norms can spread and emerge within agent societies. This paper makes two contributions to the study of norms. Firstly, based on the simulation works on norms, we propose a life-cycle model for norms. Secondly, we discuss different mechanisms used by researchers to study norm creation, spreading, enforcement and emergence.
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Bastin Tony Roy Savarimuthu and Stephen Cranefield. A categorization of simulation works on norms. In Normative Multi-Agent Systems. Dagstuhl Seminar Proceedings, Volume 9121, pp. 1-20, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{savarimuthu_et_al:DagSemProc.09121.3,
  author =	{Savarimuthu, Bastin Tony Roy and Cranefield, Stephen},
  title =	{{A categorization of simulation works on norms}},
  booktitle =	{Normative Multi-Agent Systems},
  pages =	{1--20},
  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.09121.3},
  URN =		{urn:nbn:de:0030-drops-19057},
  doi =		{10.4230/DagSemProc.09121.3},
  annote =	{Keywords: Norms, creation, spreading, enforcement, emergence}
}
Document
DOI: 10.4230/DagSemProc.09121.4
A convention or (tacit) agreement betwixt us

Authors: Giulia Andrighetto, Luca Tummolini, Cristiano Castelfranchi, and Rosaria Conte

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

Abstract
The aim of this paper is to show that conventions are sources of tacit agreements. Such agreements are tacit in the sense that they are implicated by what the agents do (or forbear to do) though without that any communication between them be necessary. Conventions are sources of tacit agreements under two substantial assumptions: (1) that there is a salient interpretation, in some contexts, of every-one’s silence as confirmatory of the others’ expectations, and (2) that the agents share a value of not hostility. To characterize the normativity of agreements the Principle of Reliability is introduced.
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Giulia Andrighetto, Luca Tummolini, Cristiano Castelfranchi, and Rosaria Conte. A convention or (tacit) agreement betwixt us. In Normative Multi-Agent Systems. Dagstuhl Seminar Proceedings, Volume 9121, pp. 1-28, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{andrighetto_et_al:DagSemProc.09121.4,
  author =	{Andrighetto, Giulia and Tummolini, Luca and Castelfranchi, Cristiano and Conte, Rosaria},
  title =	{{A convention or (tacit) agreement betwixt us}},
  booktitle =	{Normative Multi-Agent Systems},
  pages =	{1--28},
  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.09121.4},
  URN =		{urn:nbn:de:0030-drops-19194},
  doi =		{10.4230/DagSemProc.09121.4},
  annote =	{Keywords: Agreement, convention, norm, pragmatics}
}
Document
DOI: 10.4230/DagSemProc.09121.5
A Conviviality Measure for Early Requirement Phase

Authors: Patrice Caire and Leendert van der Torre

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

Abstract
In this paper, we consider the design of convivial multi-agent systems. Conviviality has recently been proposed as a social concept to develop multi-agent systems. In this paper we introduce temporal dependence networks to model the evolution of dependence networks and conviviality over time, we introduce epistemic dependence networks to combine the viewpoints of stakeholders, and we introduce normative dependence networks to model the transformation of social dependencies by hiding power relations and social structures to facilitate social interactions. We show how to use these visual languages in design, and we illustrate the design method using an example on virtual children adoptions.
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Patrice Caire and Leendert van der Torre. A Conviviality Measure for Early Requirement Phase. In Normative Multi-Agent Systems. Dagstuhl Seminar Proceedings, Volume 9121, pp. 1-16, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{caire_et_al:DagSemProc.09121.5,
  author =	{Caire, Patrice and van der Torre, Leendert},
  title =	{{A Conviviality Measure for Early Requirement Phase}},
  booktitle =	{Normative Multi-Agent Systems},
  pages =	{1--16},
  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.09121.5},
  URN =		{urn:nbn:de:0030-drops-18999},
  doi =		{10.4230/DagSemProc.09121.5},
  annote =	{Keywords: Multi-agent systems}
}
Document
DOI: 10.4230/DagSemProc.09121.6
A Framework for Normative MultiAgent Organisations

Authors: Olivier Boissier and Jomi Fred Hübner

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

Abstract
The social and organisational aspects of agency have led to a good amount of theoretical work in terms of formal models and theories. From these different works normative multiagent systems and multiagent organisations are particularily considered in this paper. Embodying such models and theories in the conception and engineering of proper infrastructures that achieve requirements of openness and adaptation, is still an open issue. In this direction, this paper presents and discusses a framework for normative multiagent organisations. Based on the Agents and Artifacts meta-model (A&A), it introduces organisational artifacts as first class entities to instrument the normative organisation for supporting agents activities within it.
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Olivier Boissier and Jomi Fred Hübner. A Framework for Normative MultiAgent Organisations. In Normative Multi-Agent Systems. Dagstuhl Seminar Proceedings, Volume 9121, pp. 1-25, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{boissier_et_al:DagSemProc.09121.6,
  author =	{Boissier, Olivier and H\"{u}bner, Jomi Fred},
  title =	{{A Framework for Normative MultiAgent Organisations}},
  booktitle =	{Normative Multi-Agent Systems},
  pages =	{1--25},
  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.09121.6},
  URN =		{urn:nbn:de:0030-drops-19033},
  doi =		{10.4230/DagSemProc.09121.6},
  annote =	{Keywords: Normative system, organisation, artifacts, norm enforcement}
}
Document
DOI: 10.4230/DagSemProc.09121.7
A modal logic for reasoning on consistency and completeness of regulations

Authors: Christophe Garion, Stéphanie Roussel, and Laurence Cholvy

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

Abstract
In this paper, we deal with regulations that may exist in multi-agent systems in order to regulate agent behaviour and we discuss two properties of regulations, that is consistency and completeness. After defining what consistency and completeness mean, we propose a way to consistently complete incomplete regulations. In this contribution, we extend previous works and we consider that regulations are expressed in a first order modal deontic logic.
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Christophe Garion, Stéphanie Roussel, and Laurence Cholvy. A modal logic for reasoning on consistency and completeness of regulations. In Normative Multi-Agent Systems. Dagstuhl Seminar Proceedings, Volume 9121, pp. 1-17, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{garion_et_al:DagSemProc.09121.7,
  author =	{Garion, Christophe and Roussel, St\'{e}phanie and Cholvy, Laurence},
  title =	{{A modal logic for reasoning on consistency and completeness of regulations}},
  booktitle =	{Normative Multi-Agent Systems},
  pages =	{1--17},
  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.09121.7},
  URN =		{urn:nbn:de:0030-drops-19047},
  doi =		{10.4230/DagSemProc.09121.7},
  annote =	{Keywords: Regulations, consistency, completeness, deontic logic, default logic}
}
Document
DOI: 10.4230/DagSemProc.09121.8
A note on brute vs. institutional facts

Authors: Davide Grossi

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

Abstract
The paper investigates the famous Searlean distinction between "brute" and "institutional" concepts from a logical point of view. We show how the partitioning of the non-logical alphabet—e.g., into "brute" and "institutional" atoms—gives rise to interesting modal properties. A modal logic, called UpTo-logic, is introduced and investigated which formalizes the notion of (propositional) logical equivalence up to a given signature.
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Davide Grossi. A note on brute vs. institutional facts. In Normative Multi-Agent Systems. Dagstuhl Seminar Proceedings, Volume 9121, pp. 1-10, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{grossi:DagSemProc.09121.8,
  author =	{Grossi, Davide},
  title =	{{A note on brute vs. institutional facts}},
  booktitle =	{Normative Multi-Agent Systems},
  pages =	{1--10},
  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.09121.8},
  URN =		{urn:nbn:de:0030-drops-19103},
  doi =		{10.4230/DagSemProc.09121.8},
  annote =	{Keywords: Modal logic, brute and institutional facts}
}
Document
DOI: 10.4230/DagSemProc.09121.9
A Taxonomy for Ensuring Institutional Compliance in Utility Computing

Authors: Tina Balke

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

Abstract
With the ongoing evolution from closed to open distributed systems and the lifting of the assumption that agents acting in such a system do not pursue own goals and act in the best interest of the society, new problems arise. One of them is that compliance cannot be assumed necessarily and consequently trust issues arise. One way of tackling this problem is by regulating the behavior of the agents with the help of institutions. However for institutions to function effectively their compliance needs to be ensured. Using a utility computing scenario as sample application, this paper presents a general applicable taxonomy for ensuring compliance that can be consulted for analyzing, comparing and developing enforcement strategies and hopefully will stimulate research in this area.
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Tina Balke. A Taxonomy for Ensuring Institutional Compliance in Utility Computing. In Normative Multi-Agent Systems. Dagstuhl Seminar Proceedings, Volume 9121, pp. 1-17, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{balke:DagSemProc.09121.9,
  author =	{Balke, Tina},
  title =	{{A Taxonomy for Ensuring Institutional Compliance in Utility Computing}},
  booktitle =	{Normative Multi-Agent Systems},
  pages =	{1--17},
  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.09121.9},
  URN =		{urn:nbn:de:0030-drops-19012},
  doi =		{10.4230/DagSemProc.09121.9},
  annote =	{Keywords: Institutions, Compliance, Enforcement, Regimentation, Norms, Sanctions, Utility Computing}
}
Document
DOI: 10.4230/DagSemProc.09121.10
An essay on msic-systems

Authors: Jan Odelstad

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

Abstract
A theory of many-sorted implicative conceptual systems (abbreviated msic-systems) is outlined. Examples of msic-systems include legal systems, normative systems, systems of rules and instructions, and systems expressing policies and various kinds of scientific theories. In computer science, msic-systems can be used in, for instance, legal information systems, decision support systems, and multi-agent systems. In this essay, msic-systems are approached from a logical and algebraic perspective aiming at clarifying their structure and developing effective methods for representing them. Of special interest are the most narrow links or joinings between different strata in a system, that is between subsystems of different sorts of concepts, and the intermediate concepts intervening between such strata. Special emphasis is put on normative systems, and the role that intermediate concepts play in such systems, with an eye on knowledge representation issues. In this essay, normative concepts are constructed out of descriptive concepts using operators based on the Kanger-Lindahl theory of normative positions. An abstract architecture for a norm-regulated multi-agent system is suggested, containing a scheme for how normative positions will restrict the set of actions that the agents are permitted to choose from.
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Jan Odelstad. An essay on msic-systems. In Normative Multi-Agent Systems. Dagstuhl Seminar Proceedings, Volume 9121, pp. 1-39, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{odelstad:DagSemProc.09121.10,
  author =	{Odelstad, Jan},
  title =	{{An essay on msic-systems}},
  booktitle =	{Normative Multi-Agent Systems},
  pages =	{1--39},
  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.09121.10},
  URN =		{urn:nbn:de:0030-drops-19146},
  doi =		{10.4230/DagSemProc.09121.10},
  annote =	{Keywords: Concept formation, Intermediary, Intermediate concept, Legal concept, Normative system, Normative position, Norm-regulated system, Agent architecture.}
}
Document
DOI: 10.4230/DagSemProc.09121.11
Argumentation based Resolution of Conflicts Between Desires and Normative Goals

Authors: Sanjay Modgil and Michael Luck

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

Abstract
Norms represent what ought to be done, and their fulfillment can be seen as benefiting the overall system, society or organisation. However, individual agent goals (desire) may conflict with system norms. If a decision to comply with a norm is determined exclusively by an agent or, conversely, if norms are rigidly enforced, then system performance may be degraded, and individual agent goals may be inappropriately obstructed. To prevent such deleterious effects we propose a general framework for argumentation-based resolution of conflicts amongst desires and norms. In this framework, arguments for and against compliance are arguments justifying rewards, respectively punishments, exacted by `enforcing' agents. The arguments are evaluated in a recent extension to Dung's abstract argumentation framework, in order that the agents can engage in metalevel argumentation as to whether the rewards and punishments have the required motivational force. We provide an example instantiation of the framework based on a logic programming formalism.
Cite as

Sanjay Modgil and Michael Luck. Argumentation based Resolution of Conflicts Between Desires and Normative Goals. In Normative Multi-Agent Systems. Dagstuhl Seminar Proceedings, Volume 9121, pp. 1-18, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{modgil_et_al:DagSemProc.09121.11,
  author =	{Modgil, Sanjay and Luck, Michael},
  title =	{{Argumentation based Resolution of Conflicts Between Desires and Normative Goals}},
  booktitle =	{Normative Multi-Agent Systems},
  pages =	{1--18},
  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.09121.11},
  URN =		{urn:nbn:de:0030-drops-19124},
  doi =		{10.4230/DagSemProc.09121.11},
  annote =	{Keywords: Argumentation, Norms, Desires, Conflicts}
}
Document
DOI: 10.4230/DagSemProc.09121.12
Contract Formation through Preemptive Normative Conflict Resolution

Authors: Wamberto Vasconcelos and Timothy J. Norman

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

Abstract
We explore a rule-based formalisation for contracts: the rules capture conditional norms, that is, they describe situations arising during the enactment of a multi-agent system, and norms that arise from these situations. However, such rules may establish conflicting norms, that is, norms which simultaneously prohibit and oblige (or prohibit and permit) agents to perform particular actions. We propose to use a mechanism to detect and resolve normative conflicts in a preemptive fashion: these mechanisms are used to analyse a contract and suggest "amendments" to the clauses of the contract. These amendments narrow down the scope of influence of norms and avoid normative conflicts. Agents propose rules and their amendments, leading to a contract in which no conflicts may arise.
Cite as

Wamberto Vasconcelos and Timothy J. Norman. Contract Formation through Preemptive Normative Conflict Resolution. In Normative Multi-Agent Systems. Dagstuhl Seminar Proceedings, Volume 9121, pp. 1-18, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{vasconcelos_et_al:DagSemProc.09121.12,
  author =	{Vasconcelos, Wamberto and Norman, Timothy J.},
  title =	{{Contract Formation through Preemptive Normative Conflict Resolution}},
  booktitle =	{Normative Multi-Agent Systems},
  pages =	{1--18},
  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.09121.12},
  URN =		{urn:nbn:de:0030-drops-19207},
  doi =		{10.4230/DagSemProc.09121.12},
  annote =	{Keywords: Normative Conflict, Contracts}
}
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.
Cite as

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.09121.14
Dynamic Context Logic and its Application to Norm

Authors: Guillaume Aucher, Davide Grossi, Andreas Herzig, and Emiliano Lorini

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

Abstract
Building on a simple modal logic of context, the paper presents a dynamic logic characterizing operations of contraction and expansion on theories. We investigate the mathematical properties of the logic, and use it to develop an axiomatic and semantic analysis of norm change in normative systems. The proposed analysis advances the state of the art by providing a formal semantics of norm-change which, at the same time, takes into account several different aspects of the phenomenon, such as permission and obligation dynamics, as well as the dynamics of classificatory rules.
Cite as

Guillaume Aucher, Davide Grossi, Andreas Herzig, and Emiliano Lorini. Dynamic Context Logic and its Application to Norm. In Normative Multi-Agent Systems. Dagstuhl Seminar Proceedings, Volume 9121, pp. 1-13, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{aucher_et_al:DagSemProc.09121.14,
  author =	{Aucher, Guillaume and Grossi, Davide and Herzig, Andreas and Lorini, Emiliano},
  title =	{{Dynamic Context Logic and its Application to Norm}},
  booktitle =	{Normative Multi-Agent Systems},
  pages =	{1--13},
  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.09121.14},
  URN =		{urn:nbn:de:0030-drops-19009},
  doi =		{10.4230/DagSemProc.09121.14},
  annote =	{Keywords: Context logic, norm change, deontic logic}
}
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