RT Journal Article T1 Deep multi-task learning for gait-based biometrics. A1 Marín Jiménez, Manuel Jesús A1 Castro, Francisco M. A1 Guil-Mata, Nicolás A1 de la Torre, Fernando A1 Medina-Carnicer, Rafael K1 Aprendizaje automático AB The task of identifying people by the way they walk is known as `gait recognition'. Although gait is mainly used for identification, additional tasks as gender recognition or age estimation may be addressed based on gait as well. In such cases, traditional approaches consider those tasks as independent ones, defining separated task-specific features and models for them. This paper shows that by training jointly more than one gait-based tasks, the identification task converges faster than when it is trained independently, and the recognition performance of multi-task models is equal or superior to more complex single-task ones. Our model is a multi-task CNN that receives as input a fixed-length sequence of optical flow channels and outputs several biometric features (identity, gender and age). PB IEEE YR 2017 FD 2017 LK https://hdl.handle.net/10630/37143 UL https://hdl.handle.net/10630/37143 LA eng NO https://journals.ieeeauthorcenter.ieee.org/become-an-ieee-journal-author/publishing-ethics/guidelines-and-policies/post-publication-policies/#preprint DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 27 mar 2026