ARTICLE Tarigopula_OJSP_2025/IDIAP Posterior-based analysis of spatio-temporal features for Sign Language Assessment Tarigopula, Neha Tornay, Sandrine Mercanoglu Sincan, Ozge Bowden, Richard Magimai-Doss, Mathew IEEE Open Journal of Signal Processing 2025 10.1109/OJSP.2025.3531781 doi