@inproceedings{COLT'26:parafreeGV,
    author = {Yuheng Zhao and Andrew Jacobsen and Nicol{\`o} Cesa-Bianchi and Peng Zhao},
    title = {Gradient-Variation Regret Bounds for Unconstrained Online Learning},
    booktitle = {Proceedings of the 39th Annual Conference on Learning Theory (COLT)},
    year = {2026},
    pages = {7062--7104}
}