Title: Many-Goals Reinforcement Learning,
Abstract: All-goals updating exploits the off-policy nature of Q-learning to update all
possible goals an agent could have from each transition in the world, and was
introduced into Reinforcement Learning (RL) by Kaelbling (1993). In prior work
this was mostly explored in small-state RL problems that allowed tabular
representations and where all possible goals could be explicitly enumerated and
learned separately. In this paper we empirically explore 3 different extensions
of the idea of updating many (instead of all) goals in the context of RL with
deep neural networks (or DeepRL for short). First, in a direct adaptation of
Kaelbling's approach we explore if many-goals updating can be used to achieve
mastery in non-tabular visual-observation domains. Second, we explore whether
many-goals updating can be used to pre-train a network to subsequently learn
faster and better on a single main task of interest. Third, we explore whether
many-goals updating can be used to provide auxiliary task updates in training a
network to learn faster and better on a single main task of interest. We
provide comparisons to baselines for each of the 3 extensions.