Preserving Knowledge Invariance: Rethinking Robustness Evaluation of Open Information Extraction. - Ji Qi 003; Chuchun Zhang; Xiaozhi Wang; Kaisheng Zeng; Jifan Yu; Jinxin Liu 002; Jiuding Sun; Yuxiang Chen; Lei How; Juanzi Li; Bin Xu 001 (CoRR, 2023)