no code implementations • 13 Apr 2021 • Yan Zhao, Weicong Chen, Xu Tan, Kai Huang, Jihong Zhu
The adaptive adjusting term is composed of two complementary factors: 1) quantity factor, which pays more attention to tail classes, and 2) difficulty factor, which adaptively pays more attention to hard instances in the training process.
no code implementations • 3 Dec 2020 • Weicong Chen, Xi Yang, Shi Jin, Pingping Xu
An approximated ergodic spectral efficiency of the SAoS aided system is derived and the performance impact of the SAoS design is evaluated.
Information Theory Information Theory
no code implementations • 9 May 2020 • Weicong Chen, Lin Bai, Wankai Tang, Shi Jin, Wei Xiang Jiang, Tie Jun Cui
The existing phase shifter models adopted for reconfigurable intelligent surfaces (RISs) have ignored the electromagnetic (EM) waves propagation behavior, thus cannot reveal practical effects of RIS on wireless communication systems.
no code implementations • WS 2019 • Yingce Xia, Xu Tan, Fei Tian, Fei Gao, Weicong Chen, Yang Fan, Linyuan Gong, Yichong Leng, Renqian Luo, Yiren Wang, Lijun Wu, Jinhua Zhu, Tao Qin, Tie-Yan Liu
We Microsoft Research Asia made submissions to 11 language directions in the WMT19 news translation tasks.