References of "van der Torre, Leon 50003247"
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See detailIntroduction to normative multiagent systems
Boella, Guido; van der Torre, Leon UL; Verhagen, H.

in Computational and Mathematical Organization Theory (2006), 12(2-3), 7179

This article introduces the research issues related to and definition of normative multiagent systems. It also describes the papers selected from NorMAS05 that are part of this double special issue and ... [more ▼]

This article introduces the research issues related to and definition of normative multiagent systems. It also describes the papers selected from NorMAS05 that are part of this double special issue and relates the papers to each other. [less ▲]

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See detailMerging Rules: Preliminary Version
Booth, Richard UL; Kaci, S.; van der Torre, Leon UL

Scientific Conference (2006)

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See detailSecurity Policies for Sharing Knowledge in Virtual Communities
Boella, Guido; van der Torre, Leon UL

in IEEE Transactions on Systems, Man and Cybernetics. Part A, Systems and Humans (2006), 36(3), 439450

Knowledge management exploits the new opportuni- ties of sharing knowledge among members of virtual communities in distributed computer networks, and knowledge-management systems are therefore modeled and ... [more ▼]

Knowledge management exploits the new opportuni- ties of sharing knowledge among members of virtual communities in distributed computer networks, and knowledge-management systems are therefore modeled and designed as multiagent sys- tems. In this paper, normative multiagent systems for secure knowledge management based on access-control policies are studied. It is shown how distributed access control is realized by means of local policies of access-control systems for documents of knowledge providers, and by means of global community policies regulating these local policies. Moreover, it is shown how such a virtual community of multiple knowledge providers respects the autonomy of the knowledge providers [less ▲]

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See detailDelegation of Power in Normative Multiagent Systems
Boella, Guido; van der Torre, Leon UL

in Deontic Logic and Artificial Normative Systems, 8th International Workshop on Deontic Logic in Computer Science ($$EON'06) (2006)

In this paper we reconsider the definition of counts-as relations in normative multiagent systems: counts-as relations do not always provide directly an abstract interpretation of brute facts in terms of ... [more ▼]

In this paper we reconsider the definition of counts-as relations in normative multiagent systems: counts-as relations do not always provide directly an abstract interpretation of brute facts in terms of institutional facts. We argue that in many cases the inference of institutional facts from brute facts is the result of actions of agents acting on behalf of the normative systems and who are in charge of recognizing which institutional facts follow from brute facts. We call this relation delegation of power: it is composed of a counts-as relation specifying that the effect of an action of an agent is an institutional fact and by a goal of the normative system that the fact is considered as an institutional fact. This relation is more complex than institutional empowerment, where an action of an agent counts-as an action of the normative system but no goal is involved, and than delegation of goals, where a goal is delegated to an agent without giving it any power. With two case studies we show the importance of the delegation of power. Finally, we show how the new definition can be related with existing ones by using different levels of abstraction. [less ▲]

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See detailAcyclic Argumentation: Attack = Conflict + Preference
Kaci, S.; van der Torre, Leon UL; Weydert, Emil UL

in Acyclic Argumentation: Attack = Conflict + Preference (2006)

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See detailA Game Theoretic Approach to Contracts in Multiagent Systems
Boella, Guido; van der Torre, Leon UL

in IEEE Transactions on Systems, Man and Cybernetics. Part C, Applications and Reviews (2006), 36(1), 6879

Contracts are used to create new interaction pos- sibilities among agents, and they therefore play an important role in the game theoretic analysis of agent interaction. We use normative multiagent ... [more ▼]

Contracts are used to create new interaction pos- sibilities among agents, and they therefore play an important role in the game theoretic analysis of agent interaction. We use normative multiagent systems to model both the contracts and the interactions. In particular, we formalize contracts as systems of regulative and constitutive norms within a larger rule-governed setting, and using recursive modelling we develop a game theory where agents make contracts. We show how agents can modify the behavior of normative systems by means of constitutive rules in the contract changing these systems, and we illustrate how agents use the game theory within contract negotiation in organizations. [less ▲]

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See detailPreface
Boella, Guido; van der Torre, Leon UL

in Electronic Notes in Theoretical Computer Science (2006), 150(3), 12

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See detailACL Semantics between Social Commitments and Mental Attitudes
Boella, Guido; Damiano, R.; Hulstijn, J. et al

Book published by Springer (2006)

There are two main traditions in defining a semantics for agent com- munication languages, based either on mental attitudes or on social commitments. In this paper, we translate both traditions in a ... [more ▼]

There are two main traditions in defining a semantics for agent com- munication languages, based either on mental attitudes or on social commitments. In this paper, we translate both traditions in a different approach in which the di- alogue state is represented by the beliefs and goals publicly attributed to the roles played by the dialogue participants. On the one hand, this approach avoids the problems of mentalistic semantics, such as the unverifiability of private mental states. On the other hand, it allows use to reuse the logics and implementations developed for FIPA compliant approaches. [less ▲]

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