My research interests include natural language processing, its underlying machine learning algorithms and downstream applications. I serve as reviewer for top journals such as Computational Linguistics, Transaction of Association of Computational Linguistics (action editor), IEEE Transaction on Big Data (associate editor), ACM Transactions on Asian and Low Resource Language Information Processing (associate editor) and Journal of Artificial Intelligence Research. I am also PC member for conferences such as ACL, COLING, EMNLP, NAACL, EACL, AAAI and IJCAI. I am a PC co-chair of EMNLP (2022) and CCL (2020), and the area chairs of ACL (2017/18/19/20/21), COLING (2014/18), NAACL (2015/19/21), EMNLP (2015/17/19/20), EACL (2021) and IJCAI (2021). I won the best paper awards of IALP (2017), COLING (2018) and best paper honor able mention of SemEval (2020).