Using Prediction from Sentential Scope to Build a Pseudo Co-Testing Learner for Event Extraction Shasha Liao author Ralph Grishman author 2011-11 text Proceedings of 5th International Joint Conference on Natural Language Processing Haifeng Wang editor David Yarowsky editor Asian Federation of Natural Language Processing Chiang Mai, Thailand conference publication liao-grishman-2011-using https://aclanthology.org/I11-1080/ 2011-11 714 722