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Exploration in Deep Reinforcement Learning:A Survey - 2022

Exploration In Deep Reinforcement Learning:A Survey

Research Paper on Exploration In Deep Reinforcement Learning:A Survey

Research Area:  Machine Learning


This paper reviews exploration techniques in deep reinforcement learning. Exploration techniques are of primary importance when solving sparse reward problems. In sparse reward problems, the reward is rare, which means that the agent will not find the reward often by acting randomly. In such a scenario, it is challenging for reinforcement learning to learn rewards and actions association. Thus more sophisticated exploration methods need to be devised. This review provides a comprehensive overview of existing exploration approaches, which are categorized based on the key contributions as: reward novel states, reward diverse behaviours, goal-based methods, probabilistic methods, imitation-based methods, safe exploration and random-based methods. Then, unsolved challenges are discussed to provide valuable future research directions. Finally, the approaches of different categories are compared in terms of complexity, computational effort and overall performance.

Deep Reinforcement Learning
Deep Learning
Machine Learning

Author(s) Name:  Pawel Ladosz, Lilian Weng, Minwoo Kim, Hyondong Oh

Journal name:  Information Fusion

Conferrence name:  

Publisher name:  Elsevier

DOI:  10.1016/j.inffus.2022.03.003

Volume Information: