ADOPT: Modified Adam Can Converge with Any \ beta_2 with the Optimal Rate - Taniguchi, Shohei; Harada, Keno; Minegishi, Gouki; Oshima, Yuta; Jeong, Seong Cheol; Nagahara, Go; Iiyama, Tomoshi; Suzuki, Masahiro; Iwasawa, Yusuke; Matsuo, Yutaka (Advances in Neural Information Processing Systems, 2024)