Evaluating Open-QA Evaluation - Wang, Cunxiang; Cheng, Sirui; Guo, Qipeng; Yue, Yuanhao; Ding, Bowen; Xu, Zhikun; Wang, Yidong; Hu, Xiangkun; Zhang, Zheng; Zhang, Yue (Advances in Neural Information Processing Systems, 2023)