En temps de «situations limites»

Synthèse de flux de messages en temps réel

Monitoring stream of social media posts has attracted significant attention in the last view years. Real time summarization in microblog aims at providing new relevant and non redundant information about an event as soon as it occurs. In this paper, we propose a novel continuous summarization approach in which information updates are pushed in real time. The decision to select/ignore incoming i...

Travail coopératif à distance en conception de produits : apports et limites de l’usage d’un collecticiel

RESUME L'utilisation des collecticiels dans les projets industriels soulève de nombreuses questions, notamment en ce qui concerne la productivité et l'efficacité du travail collectif. Autrefois limités aux interactions homme-homme, les échanges coopératifs interindividuels mutent peu à peu vers une interaction homme-machine-homme. Les enjeux de ces nouvelles formes de coopération sont dès lors ...

Intelligence artificielle, ontologies et connaissances en médecine Les limites de la mécanisation de la pensée

This theoretical article aims to draw up an inventory of the latest advances in medical knowledge engineering in the specific area of ontologies and knowledge based systems design. Echoing the debates that animated the landscape of Artificial Intelligence (AI) from the 1970s under the impetus of Dreyfus HL, it aims to show that most of the difficulties currently faced by medical knowledge engin...

Une optimisation en temps de calcul pour la prédiction de zones de couverture radioélectriques

This article presents a method which optimises the computation time for the prediction of a radio coverage, whatever the propagation model used. The principle consists in reducing the number of application points of the propagation model in relation to a classical technique. The proposed method is based on a multi resolution analysis of measured signals carried out around 2 GHz, and on an elect...

Calculateurs arithmétiques en temps réel