Optimizing Sequential Models through Temporal Landmark Selection and Normalization for Sign Language Recognition - Esteban-Romero, Sergio; Martín-Fernández, Iván; Luna-Jiménez, Cristina; Gil-Martín, Manuel; Fernández-Martínez, Fernando; André, Elisabeth (Proceedings of the 18th International Conference on Agents and Artificial Intelligence, 2026)