Lambèr M. M. Royakkers

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Web mining refers to the whole of data miningand related techniques that are used toautomatically discover and extract informationfrom web documents and services. When used in abusiness context and applied to some type ofpersonal data, it helps companies to builddetailed customer profiles, and gain marketingintelligence. Web mining does, however, pose(More)
This work addresses the issue of obligations directed to groups of agents. Our main concern consists in providing a formal analysis of the structure connecting collective obligations to individual ones: which individual agent in a group should be held responsible if an obligation directed to the whole group is not fulfilled? To this aim, concepts from(More)
We analyze the notion of organizational structure in multiagent systems and explain the precise added value and the effects of such organizational structure on the involved agents. To pursue this aim, contributions from social and organization theory are considered which provide a solid theoretical foundation to this analysis. We argue that organizational(More)
A multi-agent system can be analyzed and specified as an organization consisting of roles and their relations. The performance of an organization depends on many factors among which the type of its organizational structure, i.e., the set of relations holding between its roles. This work focuses on the structure of organizations and addresses the issue of(More)
One way to allocate tasks to agents is by ascribing them obligations. From obligations to be, agents are able to infer what are the forbidden, permitted and obligatory actions they may perform, by using the wellknown Meyer’s reduction from obligations to be to obligations to do. However, we show through an example that this method is not completely adequate(More)
A multi-agent system can be analyzed and specified as an organization consisting of roles and their relations. The performance of an organization depends on many factors among which the topology of its organizational structure, i.e., the set of relations holding between its roles. This short paper provides the sketch of quantitative methods for addressing(More)
In the article, we present a logic of enactment with local reasoning. The basic idea behind this treatment is that sets of aurhorities may enact conilicting normative rules, depending on the frame of reference. The main strength of the presented theory is that we are now able to resson consistently in the presence of inconsistent enacted norms. In most(More)
Aim of the present paper is to provide a formal characterization of various different notions of responsibility within groups of agents (Who did that? Who gets the blame? Who is accountable for that? etc.). To pursue this aim, the papers proposes an organic analysis of organized collective agency by tackling the issues of organizational structure, role(More)
. In this paper we address the problem of collective norms, and discuss two action logics for that purpose. The first action logic is based on the action modality Ei, where expressions of the form Eip are read as ‘agent brings about (sees to it) that ’. This operator relates an agent with the effects of his action, and abstracts away details of the specific(More)