Beyond Exact Gradients: Convergence of Stochastic Soft-Max Policy Gradient Methods With Entropy Regularization - Ding, Yuhao; Zhang, Junzi; Lee, Hyunin; Lavaei, Javad; U. S. Army Research Laboratory and the U.S. Army Research Office; Office of Naval Research; Air Force Office of Scientific Research; National Science Foundation; UC Noyce Initiative (IEEE Transactions on Automatic Control ; volume 70, issue 8, page 5129-5144 ; ISSN 0018-9286 1558-2523 2334-3303, 2025)