About Me

I am currently a final-year Ph.D. student at The Chinese University of Hong Kong, supervised by Prof. Wai Lam. Before joining CUHK, I was a full-time Research Engineer at Agency for Science, Technology and Research (A*STAR), Singapore. I got my bachelor degree in computer science from Yingcai Honors College, University of Electronic Science and Technology of China (UESTC). My research interests include topics in machine reading comprehension (MRC). Most recently, I am interested in knowledge enhancement and alignment for LLMs.

Education

• Aug. 2020 - Present, Ph.D.
  Department of Systems Engineering and Engineering Management,
  The Chinese University of Hong Kong
  

• Sep. 2015 - Jun. 2019, B.E.
  Computer Science from Yingcai Honors College,
  University of Electronic Science and Technology of China
  

Preprints

• Reasons to Reject? Aligning Language Models with Judgments [arxiv][code]
  Weiwen Xu, Deng Cai, Zhisong Zhang, Wai Lam, Shuming Shi
  

Publications

• From Clozing to Comprehending: Retrofitting Pre-trained Masked Language Model to Pre-trained Machine Reader [paper][code]
  Weiwen Xu, Xin Li, Wenxuan Zhang, Meng Zhou, Wai Lam, Luo Si, Lidong Bing
  NeurIPS 2023
  

• mPMR: A Multilingual Pre-trained Machine Reader at Scale [paper][code]
  Weiwen Xu, Xin Li, Wai Lam, Lidong Bing
  ACL 2023
  

• PeerDA: Data Augmentation via Modeling Peer Relation for Span Identification Tasks [paper][code]
  Weiwen Xu, Xin Li, Yang Deng, Lidong Bing, Wai Lam
  ACL 2023
  

• Nonfactoid question answering as query-focused summarization with graph-enhanced multihop inference [paper]
  Yang Deng, Wenxuan Zhang, Weiwen Xu, Ying Shen, Wai Lam.
  TNNLS 2023
  

• A Unified Multi-task Learning Framework for Multi-goal Conversational Recommender Systems [arxiv]
  Yang Deng, Wenxuan Zhang, Weiwen Xu, Wenqiang Lei, Tat-Seng Chua, Wai Lam.
  TOIS 2023
  

• ConReader: Exploring Implicit Relations in Contracts for Contract Clause Extraction [paper][code]
  Weiwen Xu, Yang Deng, Wenqiang Lei, Wenlong Zhao, Tat-Seng Chua, Wai Lam.
  EMNLP 2022
  

• Exploiting reasoning chains for multi-hop science question answering [paper][code]
  Weiwen Xu, Yang Deng, Huihui Zhang, Deng Cai, Wai Lam.
  EMNLP 2021 Findings
  

• Dynamic Semantic Graph Construction and Reasoning for Explainable Multi-hop Science Question Answering [paper][code]
  Weiwen Xu, Huihui Zhang, Deng Cai, Wai Lam.
  ACL 2021 Findings
  

• Addressing the Vulnerability of NMT in Input Perturbations [paper]
  Weiwen Xu, Ai Ti Aw, Yang Ding, Kui Wu, Shafiq Joty.
  NAACL 2021 Industry Track
  

• Revisit automatic error detection for wrong and missing translation–a supervised approach [paper]
  Wenqiang Lei, Weiwen Xu, Ai Ti Aw, Yuanxin Xiang, Tat-Seng Chua.
  EMNLP 2019
  

Professional Service

• Conference Reviwer: EMNLP2023, ACL2023, SIGIR2023, IJCAI2023, ECIR2023, EMNLP2022, NAACL2022, ACL2021, EMNLP2021, NAACL2021,
• Journal Reviewer: TACL, Knowledge-Based Systems, ACM Trans. on Web, Neurocomputing