Bias in Natural Actor-Critic Algorithms E[ t=0 γ t rt |s0 =s, θ]. Similarly, the state-action value ∞ function is Qθ (s, a) = E[ t=0 γ t rt |s0 =s, a0 =a, θ]. The discounted state distribution, dθ , gives the probability of each state when using policy ...
Bias in Natural Actor-Critic Algorithms 来自 Semantic Scholar 喜欢 0 阅读量: 131 作者: PS Thomas 摘要: We show that several popular discounted reward natural actor-critics, including the popular NAC-LSTD and eNAC algorithms, do not generate unbiased estimates of the natural policy gradient as ...
Thomas, P. (2014). Bias in Natural Actor-Critic Algorithms. ICML. Lillicrap, T., Hunt, J., Pritzel, A., Heess, N., Erez, T., Tassa, Y., Silver, D., & Wierstra, D. (2016). Continuous control with deep reinforcement learning. CoRR, abs/1509.02971. Haarnoja, T., Tang, H.,...
首先我想先谈一下我质疑楼上观点的原因，ppt里not unbiased后面其实有一个括号（if the critic is not...
Simultaneously, in order to improve the sampling efficiency of the algorithm, we propose an improved prioritized experience replay mechanism by modifying the priority definition instead of the original random sampling. Experiments show that, compared with two state-of-the-art algorithms, our algorithm ...
2. Critic Estimation Bias 注意到在AC的更新中，我们用temporal difference error去近似advantage function...
如何计算三个算法的bias和variance 用定义求即可。不过一般情况下，是无法直接求解的，只能根据问题的性质...