Neural Network Optimization for Reinforcement Learning Tasks Using Sparse Computations

7 Jan 2022  ·  Dmitry Ivanov, Mikhail Kiselev, Denis Larionov ·

This article proposes a sparse computation-based method for optimizing neural networks for reinforcement learning (RL) tasks. This method combines two ideas: neural network pruning and taking into account input data correlations; it makes it possible to update neuron states only when changes in them exceed a certain threshold. It significantly reduces the number of multiplications when running neural networks. We tested different RL tasks and achieved 20-150x reduction in the number of multiplications. There were no substantial performance losses; sometimes the performance even improved.

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