Depuis quelques années, les réseaux sociaux et les usages qu'ils nourrissent ont pris une place significative au sein de la galaxie Internet. Parmi ces réseaux, ceux qui pratiquent la gratuité pour les utilisateurs finals n'ont pas encore stabilisé leur modèle économique et ce, malgré...

We provide the first theoretical analysis of altruism in networks. Agents are embedded in a fixed, weighted network and care about their direct friends. Given some initial distribution of incomes, they may decide to support their poorer friends. We study the resulting non-cooperative transfer...

Ce rapport de recherche est une synthèse de la littérature en sciences sociales abordant la question de la régulation formelle des communautés en ligne, en particulier celles des sites de réseaux sociaux, de partage de vidéos, de "fanfictions", les communautés open-source, open-media, les...

Despites the great interest caused by social networks in Business Science, their analysis is rarely performed both in a global and systematic way in this field: most authors focus on parts of the studied network, or on a few nodes considered individually. This could be explained by the fact that...

The purpose of this paper is to offer customer relationship insights in what is a fast developing new e-commerce development strategy. We examine the potential synergies between digital social networks (DSN) and e-commerce websites, thus bringing e-commerce and DSN websites into the same...

This case study is made from an action-research intervention in a very huge multinational company of telecommunications. The objectives of the projects were to change the miond (attitudes, behavior and competences) of all these people who work in software development in the company (several...

Despites the great interest caused by social networks in Business Science, their analysis is rarely performed in both a global and systematic way in this field. This could be explained by the fact their practical extraction is a difficult and costly task. One may ask if equivalent information...

This ongoing research gives the first exploratory results of a study about the collective intelligence processes in the anti-shale hydrocarbon social movements in France, in 2011-2012. There has been only a few researches in information systems about social movements. An inductive approach of...

This paper extends the standard work effort model by allowing workers to interact through networks. We investigate experimentally whether peer performances and peer contextual effects influence individual performances. Two types of network are considered. Participants in Recursive networks are...

This article investigate the role of social influence for the expectation formation of economic agents. Using self-organizing Kohonen maps the repeated cross-section data set of the University of Michigan consumer survey is transformed into a pseudo panel allowing to monitor the expectation...