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  • Title: Stochastic Integrated Actor-Critic for Deep Reinforcement Learning.
    Author: Zheng J, Kurt MN, Wang X.
    Journal: IEEE Trans Neural Netw Learn Syst; 2024 May; 35(5):6654-6666. PubMed ID: 36256721.
    Abstract:
    We propose a deep stochastic actor-critic algorithm with an integrated network architecture and fewer parameters. We address stabilization of the learning procedure via an adaptive objective to the critic's loss and a smaller learning rate for the shared parameters between the actor and the critic. Moreover, we propose a mixed on-off policy exploration strategy to speed up learning. Experiments illustrate that our algorithm reduces the sample complexity by 50%-93% compared with the state-of-the-art deep reinforcement learning (RL) algorithms twin delayed deep deterministic policy gradient (TD3), soft actor-critic (SAC), proximal policy optimization (PPO), advantage actor-critic (A2C), and interpolated policy gradient (IPG) over continuous control tasks LunarLander, BipedalWalker, BipedalWalkerHardCore, Ant, and Minitaur in the OpenAI Gym.
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