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cs.LG2026
Regret Lower Bound for Online Learning of Quantum States with Logarithmic Loss, with Applications to Quantum State Tomography and Confidence Sequences for Matrix Means
Yen-Huan Li, Wei-Fu Tseng
We study the problem of online learning of quantum states with logarithmic loss, which is a quantum generalization of online portfolio selection and has applications to quantum sta…
cs.IT2026
Algorithms for Computing the Petz-Augustin Capacity
Chun-Neng Chu, Wei-Fu Tseng, Yen-Huan Li
We propose the first algorithms with non-asymptotic convergence guarantees for computing the Petz-Augustin capacity, which generalizes the channel capacity and characterizes the op…