Lucas Alegre, Ana Bazzan, and Bruno Silva. 2026. Sample-Efficient Multi-Task and Multi-Objective Reinforcement Learning by Combining Multiple Behaviors. In Proceedings of the 39th Thesis and Dissertation Contest, July 19, 2026, Gramado/RS, Brasil. SBC, Porto Alegre, Brasil, 50-59. DOI: https://doi.org/10.5753/ctd.2026.19119.