Accelerating Resource Allocation in Open RAN Slicing via Deep Reinforcement Learning. - Tuan-Vu Truong; Van-Dinh Nguyen; Quang-Trung Luu; Phi-Son Vo; Xuan-Phu Nguyen 001; Fatemeh Kavehmadavani; Symeon Chatzinotas (IEEE Trans. Netw. Serv. Manag., 2026)