TY - Front. Comput. Sci. A1 - Yixuan CAO, Dian CHEN, Zhengqi XU, Hongwei LI, Ping LUO T1 - Nested relation extraction with iterative neural network Y1 - 2021-06-15 JF - Frontiers of Computer Science JO - Front. Comput. Sci. SP - 153323 EP - VL - 15 IS - 3 UR - https://journal.hep.com.cn/fcs N1 - 10.1007/s11704-020-9420-6 ER -