2 papers
cs.IT2026
Exact Second-Order Asymptotics in Covert Communication Over Discrete Memoryless Channels
Qiaosheng Zhang, Lin Zhou, Xuelong Li
We determine the exact second-order asymptotics of covert communication over binary-input discrete memoryless channels when covertness is measured by variational distance. Previous…
cs.LG2025
Graph Feedback Bandits on Similar Arms: With and Without Graph Structures
Han Qi, Fei Guo, Li Zhu +1
In this paper, we study the stochastic multi-armed bandit problem with graph feedback. Motivated by applications in clinical trials and recommendation systems, we assume that two a…