Scruter le réel

Retweeter ou ne pas retweeter : Le dilemme des portails de diffusion d'information temps-réel

The study of contextual features has been widely discussed in Information Retrieval (IR), but concrete applications on real data streams are not common. In this paper, we aim at doing retweet recommandation. Considering a user interest, we introduce a model to perform real-time online filtering of the Twitter stream using several contextual features. The model separates content and contextual a...

LUSTRE : un langage déclaratif pour le temps réel. (LUSTRE: a real time declarative language)

Métadonnées spatiotemporelles temps réel

HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau...

Représentations alternatives du détail visuel pour le rendu en temps-réel. (Alternative representations of visual detail for real-time rendering)

This thesis takes place in the context of real-time image synthesis. It addresses the problem of efficient rendering for visual detail, main component of an image’s realism. To cope with the complexity of visual detail it is necessary to possess representations which are adapted to objects that are to be rendered, together with capabilities of modern graphics processors. The first research effo...

Vers le temps réel en transcription automatique de la parole grand vocabulaire. (Towards real time in large vocabulary speech recognition)

This article presents a clustering algorithm to determine the optimal number of components in a Gaussian mixture. The principle is to start from an important number of mixture components then group the multivariate normal distributions into clusters using the divergence, a weighted symmetric, distortion measure based on the Kullback-Leibler distance. The optimal cut in the tree, i.e. the cluste...