Abstract
Deep reinforcement learning is poised to revolutionise the field of AI and
represents a step towards building autonomous systems with a higher level
understanding of the visual world. Currently, deep learning is enabling
reinforcement learning to scale to problems that were previously intractable,
such as learning to play video games directly from pixels. Deep reinforcement
learning algorithms are also applied to robotics, allowing control policies for
robots to be learned directly from camera inputs in the real world. In this
survey, we begin with an introduction to the general field of reinforcement
learning, then progress to the main streams of value-based and policy-based
methods. Our survey will cover central algorithms in deep reinforcement
learning, including the deep $Q$-network, trust region policy optimisation, and
asynchronous advantage actor-critic. In parallel, we highlight the unique
advantages of deep neural networks, focusing on visual understanding via
reinforcement learning. To conclude, we describe several current areas of
research within the field.
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