Folksonomy: the New Way to Serendipity

Folksonomy expands the collaborative process by allowing contributors to index content. It rests on three powerful properties: the absence of a prior taxonomy, multi-indexation and the absence of thesaurus. It concerns a more exploratory search than an entry in a search engine. Its original relationship-based structure (the three-way relationship between users, content and tags) means that folksonomy allows various modalities of curious explorations: a cultural exploration and a social exploration. The paper has two goals. Firstly, it tries to draw a general picture of the various folksonomy websites. Secundly, since labelling lacks any standardisation, folksonomies are often under threat of invasion by noise. This paper consequently tries to explore the different possible ways of regulating the self-generated indexation process.taxonomy; indexation; innovation and user-created content

On clustering procedures and nonparametric mixture estimation

This paper deals with nonparametric estimation of conditional den-sities in mixture models in the case when additional covariates are available. The proposed approach consists of performing a prelim-inary clustering algorithm on the additional covariates to guess the mixture component of each observation. Conditional densities of the mixture model are then estimated using kernel density estimates ap-plied separately to each cluster. We investigate the expected L 1 -error of the resulting estimates and derive optimal rates of convergence over classical nonparametric density classes provided the clustering method is accurate. Performances of clustering algorithms are measured by the maximal misclassification error. We obtain upper bounds of this quantity for a single linkage hierarchical clustering algorithm. Lastly, applications of the proposed method to mixture models involving elec-tricity distribution data and simulated data are presented

Folksonomy: the New Way to Serendipity

Folksonomy expands the collaborative process by allowing contributors to index content. It rests on three powerful properties: the absence of a prior taxonomy, multi-indexation and the absence of thesaurus. It concerns a more exploratory search than an entry in a search engine. Its original relationship-based structure (the three-way relationship between users, content and tags) means that folksonomy allows various modalities of curious explorations: a cultural exploration and a social exploration. The paper has two goals. Firstly, it tries to draw a general picture of the various folksonomy websites. Secundly, since labelling lacks any standardisation, folksonomies are often under threat of invasion by noise. This paper consequently tries to explore the different possible ways of regulating the self-generated indexation process

Managing conflicts between users in Wikipedia

Wikipedia is nowadays a widely used encyclopedia, and one of the most visible sites on the Internet. Its strong principle of collaborative work and free editing sometimes generates disputes due to disagreements between users. In this article we study how the wikipedian community resolves the conflicts and which roles do wikipedian choose in this process. We observed the users behavior both in the article talk pages, and in the Arbitration Committee pages specifically dedicated to serious disputes. We first set up a users typology according to their involvement in conflicts and their publishing and management activity in the encyclopedia. We then used those user types to describe users behavior in contributing to articles that are tagged by the wikipedian community as being in conflict with the official guidelines of Wikipedia, or conversely as being well featured.Comment: 12 p

Sociologie pragmatique de la politique et de la morale

Laurent Thévenot, directeur d’études Pouvoirs et oppressions : de la garantie de capacités à l’ouverture critique Alors que la notion de pouvoir prend couramment un tour critique dans les sciences sociales et politiques, l’affermissement du pouvoir de l’individu est par ailleurs mis en avant sous l’influence du libéralisme politique (empowerment, capability). L’intégration de ces deux approches du pouvoir importe pour éclairer ce que le libéralisme fait à la critique, ainsi que pour ouvrir ce..

Sociologie pragmatique de la politique et de la morale

Laurent Thévenot, directeur d’études Pouvoirs, oppressions : garantie de capacités et ouvertures critiques Par quelles voies et en rencontrant quels obstacles la personne affectée dans ses engagements chemine-t-elle dans l’expression de l’atteinte qu’elle subit, afin de communiquer une oppression et de la transformer ou non en critique publique ? La réponse à cette question, qui oriente le séminaire sur plusieurs années, s’inscrit dans une perspective historique et critique sur l’évolution de..

Une baisse du chômage encourageante?:Non : le marché du travail français est structurellement malade

Les chiffres publiés le 24 septembre 2014 par la DARES semblent encourageants car ils présentent une baisse de 0.3% du taux de chômage des demandeurs d’emploi de catégorie A. Qu’en estil exactement ? Il ne s’agit en définitive que d’un changement d’un mois à un autre et si l’on observe les changements sur un trimestre, on doute que la tendance pourrait s’inverser. Au contraire, les développements substantiels des derniers mois et ce malgré les débats techniques concernant les chiffres de l’Insee de l’enquête emploi et ceux de Pôle emploi nous conduisent en définitive à une conclusion limpide. La situation de l’emploi en France a continué de se détériorer en 2014 et est des plus inquiétantes.The data released on September 24th, 2014 by the DARES is encouraging because it shows a decline of 0.3% in the Class A job seeker unemployment rate. But what does this really mean? Ultimately, the change is representative of slight fluctuation from one month to another. If we look at changes that have occurred during the last quarter, it is doubtful the longerterm trend could be reversed. In contrast, substantial developments in recent months, despite the technical discussions on figures from the INSEE employment survey and the Pôle Emploi, ultimately lead us to a clear conclusion. The employment situation in France has deteriorated further in 2014 and is of growing concern