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Curriculum Reinforcement Learning via Constrained Optimal Transport
Pascal Klink · Haoyi Yang · Carlo D'Eramo · Jan Peters · Joni Pajarinen

Wed Jul 20 01:45 PM -- 01:50 PM (PDT) @ Hall G
in Reinforcement Learning »

Curriculum reinforcement learning (CRL) allows solving complex tasks by generating a tailored sequence of learning tasks, starting from easy ones and subsequently increasing their difficulty. Although the potential of curricula in RL has been clearly shown in a variety of works, it is less clear how to generate them for a given learning environment, resulting in a variety of methods aiming to automate this task. In this work, we focus on the idea of framing curricula as interpolations between task distributions, which has previously been shown to be a viable approach to CRL. Identifying key issues of existing methods, we frame the generation of a curriculum as a constrained optimal transport problem between task distributions. Benchmarks show that this way of curriculum generation can improve upon existing CRL methods, yielding high performance in a variety of tasks with different characteristics.

Keywords: Reinforcement Learning · MISC: Transfer, Multitask and Meta-learning

Author Information

Pascal Klink (TU Darmstadt)
Haoyi Yang (TU Darmstadt)
Carlo D'Eramo (TU Darmstadt)
Jan Peters (TU Darmstadt)
Joni Pajarinen (Aalto University)

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