581 research outputs found
The Diversity Rationale for Affirmative Action in Employment After Grutter: The Case for Containment
Entre professionnels des bibliothĂšques et historiens du livre : le dĂ©fi prosopographique du RĂ©pertoire dâimprimeurs/libraires de la BibliothĂšque nationale de France
De lâindexation aux fichiers dâautoritĂ© : lâexpĂ©rience du RĂ©pertoire dâimprimeurs/libraires de la BN
Une nouvelle méthode de Web Usage Mining basée sur une analyse sémiotique du comportement de navigation
International audienceLâobjectif de nos travaux est de proposer une mĂ©thode dâanalyse automatique du comportement des utilisateurs Ă des fins de prĂ©diction de leur propension Ă rĂ©aliser une action suggĂ©rĂ©e. Nous proposons dans cet article une nouvelle mĂ©thode de Web Usage Mining basĂ©e sur une Ă©tude sĂ©miotique des styles perceptifs, considĂ©rant lâexpĂ©rience de lâutilisateur comme Ă©lĂ©ment dĂ©terminant de sa rĂ©action Ă une sollicitation. LâĂ©tude de ces styles nous a amenĂ© Ă dĂ©finir de nouveaux indicateurs (des descripteurs sĂ©miotiques) introduisant un niveau supplĂ©mentaire Ă lâapproche sĂ©mantique dâannotation des sites. Nous proposons ensuite un modĂšle neuronal adaptĂ© au traitement de ces nouveaux indicateurs. Nous expliquerons en quoi le modĂšle proposĂ© est le plus pertinent pour traiter ces informations
De LâApparition du livre Ă lâHistoire de lâĂ©dition française et au-delĂ Â : un moment historiographique
Chacun des ouvrages dâHenri-Jean Martin a Ă©tĂ© porteur dâune dimension pionniĂšre, chacun de ses projets a constituĂ© un jalon historiographique majeur. Câest pourquoi, lorsque lâon mâa proposĂ© de venir Ă Lyon parler du « moment historiographique » quâa reprĂ©sentĂ© la premiĂšre partie de la carriĂšre du MaĂźtre, jâai Ă©tĂ© immĂ©diatement sĂ©duit. MĂȘme si je dois ajouter, pour ĂȘtre tout Ă fait honnĂȘte, que jâai Ă©tĂ© moins ravi quand on mâa demandĂ© peu avant la date de ce colloque dâessayer dâ« allonger le..
Prediction of Breathing and Gate-Opening Transitions Upon Binary Mixture Adsorption in MetalâOrganic Frameworks
International audienceAmong the numerous applications of metalâorganic frameworks (MOFs), a topical class of nanoporous materials, adsorptive separation is gaining considerable attention. Some of the most exciting candidates for gas separation processes exhibit structural transitions, such as breathing and gate opening. While predictive analytical methods are crucial in separation science and have been widely used for rigid nanoporous solids, a lack exists for materials that exhibit flexibility. We propose here a general method predicting, for the first time, the evolution of structural transitions and selectivity upon adsorption of gas mixtures in flexible nanoporous solids
Cinquante ans d\u27histoire du livre
Enregistrements audio de certaines interventions qui ont eu lieu Ă l\u27occasion du colloque international organisĂ© les 11-12 -13 dĂ©cembre 2008 par lâenssib (Centre Gabriel NaudĂ©), avec le concours de lâĂcole pratique des hautes Ă©tudes et de la bibliothĂšque municipale de Lyon.
En 1958, la cĂ©lĂšbre collection « lâĂ©volution de lâHumanitĂ© » de lâĂ©diteur Albin Michel publiait un volume intitulĂ© Lâapparition du livre, sous la double signature de Lucien Febvre, professeur au CollĂšge de France dĂ©cĂ©dĂ© en 1956, et dâHenri-Jean Martin, jeune chartiste alors en poste Ă la BibliothĂšque nationale avant de devenir directeur des bibliothĂšques de Lyon et professeur (EPHE, Ăcole des chartes, enssib). Cet ouvrage est devenu la pierre dâangle dâune histoire du livre renouvelĂ©e et fĂ©conde. Ă lâoccasion du cinquantenaire de la publication de ce livre fondateur, le colloque organisĂ© Ă Lyon voudrait ĂȘtre Ă la fois bilan dâun demi-siĂšcle de recherches et prospectif
A reusable benchmark of brain-age prediction from M/EEG resting-state signals
Population-level modeling can define quantitative measures of individual aging by applying machine learning to large volumes of brain images. These measures of brain age, obtained from the general population, helped characterize disease severity in neurological populations, improving estimates of diagnosis or prognosis. Magnetoencephalography (MEG) and Electroencephalography (EEG) have the potential to further generalize this approach towards prevention and public health by enabling assessments of brain health at large scales in socioeconomically diverse environments. However, more research is needed to define methods that can handle the complexity and diversity of M/EEG signals across diverse real-world contexts. To catalyse this effort, here we propose reusable benchmarks of competing machine learning approaches for brain age modeling. We benchmarked popular classical machine learning pipelines and deep learning architectures previously used for pathology decoding or brain age estimation in 4 international M/EEG cohorts from diverse countries and cultural contexts, including recordings from more than 2500 participants. Our benchmarks were built on top of the M/EEG adaptations of the BIDS standard, providing tools that can be applied with minimal modification on any M/EEG dataset provided in the BIDS format. Our results suggest that, regardless of whether classical machine learning or deep learning was used, the highest performance was reached by pipelines and architectures involving spatially aware representations of the M/EEG signals, leading to R^2 scores between 0.60-0.71. Hand-crafted features paired with random forest regression provided robust benchmarks even in situations in which other approaches failed. Taken together, this set of benchmarks, accompanied by open-source software and high-level Python scripts, can serve as a starting point and quantitative reference for future efforts at developing M/EEG-based measures of brain aging. The generality of the approach renders this benchmark reusable for other related objectives such as modeling specific cognitive variables or clinical endpoints
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