Perturbed Masking: Parameter-free Probing for Analyzing and Interpreting BERT Zhiyong Wu author Yun Chen author Ben Kao author Qun Liu author 2020-07 text Proceedings of the 58th Annual Meeting of the Association for Computational Linguistics Dan Jurafsky editor Joyce Chai editor Natalie Schluter editor Joel Tetreault editor Association for Computational Linguistics Online conference publication wu-etal-2020-perturbed 10.18653/v1/2020.acl-main.383 https://aclanthology.org/2020.acl-main.383/ 2020-07 4166 4176