AAAI Publications, Twenty-Eighth AAAI Conference on Artificial Intelligence

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Online Multi-Task Gradient Temporal-Difference Learning
Vishnu Purushothaman Sreenivasan, Haitham Bou Ammar, Eric Eaton

Last modified: 2014-06-21

Abstract


We develop an online multi-task formulation of model-based gradient temporal-difference (GTD) reinforcement learning. Our approach enables an autonomous RL agent to accumulate knowledge over its lifetime and efficiently share this knowledge between tasks to accelerate learning. Rather than learning a policy for a reinforcement learning task tabula rasa, as in standard GTD, our approach rapidly learns a high performance policy by building upon the agent's previously learned knowledge. Our preliminary results on controlling different mountain car tasks demonstrates that GTD-ELLA significantly improves learning over standard GTD(0).

Keywords


online multi-task learning; lifelong learning; reinforcement learning; gradient temporal-difference learning

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