. Dans-cette-thèse, évaluation de la qualité des services multimédias Nous nous sommes basés sur la méthodologie PSQA (Pseudo-Subjective Quality Assessment) pour mieux étudier la variation de la qualité des flux multimédias transmis sur un réseau tel que l'Internet et pour estimer en temps réel cette qualité, Nous nous sommes intéressés à deux applications multimédia qui ont gagné en popularité au cours des dernières années : la Voix sur IP et la Vidéo sur IP

. Dans-cette-contribution, nous nous sommes basés sur les résultats d'une évaluation objective (en utilisant VQM), pour entrainer un réseau de neurones la relation qui existe entre (i) les paramètres réseaux/vidéos et (ii) la qualité de la vidéo. Le choix de VQM comme outil d'évaluation objectif est dû au fait qu'il corrèle bien avec les scores subjectifs

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