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A Boolean Task Algebra for Reinforcement Learning
Geraud Nangue Tasse · Steven James · Benjamin Rosman

Thu Dec 10 09:00 AM -- 11:00 AM (PST) @ Poster Session 5 #1509

The ability to compose learned skills to solve new tasks is an important property for lifelong-learning agents. In this work we formalise the logical composition of tasks as a Boolean algebra. This allows us to formulate new tasks in terms of the negation, disjunction and conjunction of a set of base tasks. We then show that by learning goal-oriented value functions and restricting the transition dynamics of the tasks, an agent can solve these new tasks with no further learning. We prove that by composing these value functions in specific ways, we immediately recover the optimal policies for all tasks expressible under the Boolean algebra. We verify our approach in two domains---including a high-dimensional video game environment requiring function approximation---where an agent first learns a set of base skills, and then composes them to solve a super-exponential number of new tasks.

Author Information

Geraud Nangue Tasse (University of the Witwatersrand)
Steven James (University of the Witwatersrand)
Benjamin Rosman (University of the Witwatersrand)

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