This paper introduces a novel distance metric learning framework. Working with inequality constraints involving quadruplets of images, our approach aims at efficiently modeling similarity for rich or complex semantic label relationships. We study how our metric learning scheme can be exploited in contexts such as detection of important regions in Webpages or recognition with relative attributes...

les étudiants en français des universités iraniennes s'initient à cette langue étrangère alors qu'ils sont démunis d'un patrimoine langagier préexistant à l'apprentissage dans la plupart des cas. au fur et à mesure qu'ils parcourent leur cheminement didactique, ils se voient confrontés, entre autres, à un manque considérable dans le domaine lexical pour s'exprimer ...

This article presents some way to do quality control after digitization, specially out of focus problem. We will enumerate different point of view to analyse and to estimate this information. To validate descriptors, we suggest to blur any picture and to compute blur estimation in order to evaluate precision. After that, we propose to combinate descriptors by machine learning. MOTS-CLÉS : docum...

Automatic events extraction by combining multiple approaches In this paper, we present an automatic system for extracting events based on the combination of two existing information extraction approaches : the first one is made of hand-crafted linguistic rules and the second one is based on an automatic learning of linguistic patterns. We have shown that this mixed approach leads to a significa...

Towards Preference Extraction From Negotiation Dialogues This paper presents an NLP based approach for preference expression extraction from negotiation dialogues. We propose a new annotation schema for preferences and dependencies among them and illustrate on two different corpus genres. We then suggest a learning approach that efficiently extracts preference expressions using a combination of...

Cet article analyse la conception de scénarios pédagogiques intégrant le numérique comme activité créative (Glăveanu, 2015, 2020) et agentive (Sannino, 2015), propice à transformation l’activité d’enseignement-apprentissage susceptible constituer en formation une réponse au défi persistant l’intégration du classe (Giraudon al., 2020). Il s’appuie principalement sur théorie historico-culturelle ...