Thèse de doctorat : Università della Svizzera italiana, 2006 ; 2006COM002.
Communication is virtually impossible when interlocutors lack the ability to negotiate meanings. The intended semantics of the language used by a sender should be perceived and mastered by its receiver/s. For this reason the sender should always vision and identify himself in the receiver in order to design the most clear and proper signs with respect to her/his knowledge. Web sites are complex...
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In: The European Physical Journal: Applied Physics, 2006, vol. 33, p. 221-224
For physical processes which express themselves as a frequency, for example magnetic field measurements using optically-pumped alkali-vapor magnetometers, the precise extraction of the frequency from the noisy signal is a classical problem. We describe herein a frequency measurement system based on an inexpensive commercially available computer sound card coupled with a software single-tone...
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In this paper we propose to regard an Agent Communication Language (ACL) as a set of conventions to act on a fragment of institutional reality, defined in the context of an artificial institution. Within such an approach, we first reformulate a previously proposed commitment-based semantics for ACLs. In particular we show that all commonly used types of communicative acts can be defined in terms...
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The notion of artificial institution is crucial for the specification of open and dynamic interaction frameworks where heterogeneous and autonomous agents can interact to face problems in various fields, like for instance electronic commerce, business-to-business (B2B) applications, and personal assistant applications. In our view the specification of artificial institutions requires a clear...
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Software agents’ ability to interact within different open systems, designed by different groups, presupposes an agreement on an unambiguous definition of a set of concepts, used to describe the context of the interaction and the communication language the agents can use. Agents’ interactions ought to allow for reliable expectations on the possible evolution of the system; however, in open...
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This thesis presents the concept of general argumentation systems, a framework for representing uncertain knowledge using information algebras and information systems as well as probability algebras. Argumentation systems are a generalization of assumption-based systems and propositional argumentation systems and can deal with very general formalisms. We show also that an argumentation system...
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Thèse de doctorat : Université de Fribourg, 2002 ; no 1393.
This dissertation addresses three fundamental problems, which have to be handled in application domains like ubiquitous computing and Web services. The three problems heterogeneity, static configuration, and dynamic configuration are not only considered to persist during the near future but to increase, as similar application domains will emerge. The heterogeneity problem is defined and examples...
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Thèse de doctorat : Université de Fribourg, 1999 ; no 1272.
Cette thèse introduit une approche méthodologique à la conception d'agents artificiels. En une tentative de résoudre le problème de l'enracinement symbolique en intelligence artificielle, une nouvelle perspective théorique sur la relation agent-environnement est explorée et un jeu d'expériences sont menées pour motiver cette méthodologie. Suite à l'idée selon laquelle l'enracinement...
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Thèse de doctorat : Université de Fribourg, 2002 ; no 1392.
Les futurs réseaux optiques multicouches utilisant le multiplexage en longueur d'onde permettront dans un proche avenir l'introduction de nouveaux services optiques à valeur ajoutée. Le réseau de transport passif conventionnel se transformera ainsi en une couche de transport active et intelligente. Le succès de ces nouveaux services dépendra toutefois de l'efficacité, de la résilience et...
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Thèse de doctorat : Università della Svizzera italiana, 2003.
Web application development still needs to employ effective methods to accommodate some distinctive aspects of the requirements analysis process: capturing high-level communication goals, considering several user profiles and stakeholders, defining hypermedia-specific requirements (concerning navigation, content, information structure and presentation aspects), and reusing requirements for an...
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