Naman Agarwal, Elad Hazan. Lower Bounds for Higher-Order Convex Optimization. In Sébastien Bubeck, Vianney Perchet, Philippe Rigollet, editors, Conference On Learning Theory, COLT 2018, Stockholm, Sweden, 6-9 July 2018. Volume 75 of Proceedings of Machine Learning Research, pages 774-792, PMLR, 2018. [doi]