Speeding-up reinforcement learning through abstraction and transfer learning. - Marcelo Li Koga; Valdinei Freire da Silva; Fábio Gagliardi Cozman; Anna Helena Reali Costa (AAMAS, 2013)

Reusing Risk-Aware Stochastic Abstract Policies in Robotic Navigation Learning. - Valdinei Freire da Silva; Marcelo Li Koga; Fábio Gagliardi Cozman; Anna Helena Reali Costa (RoboCup, 2013)

Stochastic Abstract Policies: Generalizing Knowledge to Improve Reinforcement Learning. - Marcelo Li Koga; Valdinei Freire da Silva; Anna Helena Reali Costa (IEEE Trans. Cybern., 2015)