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RÉSUMÉ La campagne Défi de Fouille de Textes (DEFT) en 2013 s'est intéressée à deux types de fonctions d'analyse du langage, la classification de documents et l'extraction d'information dans le domaine de spécialité des recettes de cuisine. Nous présen-tons les systèmes du LIA appliqués à DEFT 2013. Malgré la difficulté des tâches proposées, des résultats(More)
Speaker diarization may be difficult to achieve when applied to narrative films, where speakers usually talk in adverse acoustic conditions: background music, sound effects, wide variations in intonation may hide the inter-speaker variability and make audio-based speaker diarization approaches error prone. On the other hand, such fictional movies exhibit(More)
In this paper , we present the participation of the Computer Science Laboratory of Avignon (LIA) to RepLab 2013 edition. RepLab is an evaluation campaign for Online Reputation Management Systems. LIA has produced a important number of experiments for every tasks of the campaign : filtering , topic priority detection , Polarity for Reputation and topic(More)
Twitter is now a gold marketing tool for entities concerned with online reputation. To automatically monitor online reputation of entities , systems have to deal with ambiguous entity names, polarity detection and topic detection. We propose three approaches to tackle the first issue: monitoring Twitter in order to find relevant tweets about a given entity.(More)
RÉSUMÉ. La segmentation de flux audio en locuteurs apparaît particulièrement délicate lors-qu'elle est appliquée à des films de fiction, où de nombreux personnages parlent dans des conditions acoustiques variables (musique de fond, bruitages, fluctuations dans l'intonation...). Au-delà d'une telle variabilité acoustique, ce type de films exhibe cependant de(More)
Modern popular TV series often develop complex storylines spanning several seasons, but are usually watched in quite a discontinuous way. As a result, the viewer generally needs a comprehensive summary of the previous season plot before the new one starts. The generation of such summaries requires first to identify and characterize the dynamics of the(More)