I am a Ph.D. candidate (enrolled in 2024) at the School of Computer Science and Technology, Dalian University of Technology (DUT), advised by Prof. Hongfei Lin and Prof. Liang Yang. My research interests lie in natural language processing, text mining, and fine-grained sentiment analysis. I am particularly fascinated by the application of cognitive linguistics in fine-grained sentiment analysis to enhance interpretability and performance.

If you are interested in my work or potential collaborations, please feel free to reach out to me via dlutbzw@mail.dlut.edu.cn.

📝 Publications

ACL 2025 Findings STATE ToxiCN: A Benchmark for Span-level Target-Aware Toxicity Extraction in Chinese Hate Speech Detection, Zewen Bai, Liang Yang, Shengdi Yin, Junyu Lu, Jingjie Zeng, Haohao Zhu, Yuanyuan Sun, Hongfei Lin. [Repo]
Knowledge-Based Systems Intuition meets analytics: Reasoning implicit aspect-based sentiment quadruplets with a dual-system framework, Zewen Bai, Yuanyuan Sun, Changrong Min, Junyu Lu, Haohao Zhu, Liang Yang, Hongfei Lin.
arxiv Fine-Grained Chinese Hate Speech Understanding: Span-Level Resources, Coded Term Lexicon, and Enhanced Detection Frameworks, Zewen Bai, Liang Yang, Shengdi Yin, Yuanyuan Sun, Hongfei Lin.

📖 Educations

2024.09 - now, Ph.D. student, School of Computer Science and Technology, Dalian University of Technology.
2022.09 - 2024.06, M.Sc. candidate, School of Computer Science and Technology, Dalian University of Technology.
2017.09 - 2022.06, B.Sc, School of Computer Science and Technology, Dalian University of Technology.

🧑‍🔬 Services

Organizer

🎖 Honors and Awards

Technique Evaluation

2024.07, CCAC2024 Task5: Chinese Sarcasm Detection, Chinese Information Processing Society of China, The 2nd Place in 30+ Teams. [task]

Other Awards

Langchao Scholarship. Langchao Technologies Co., Ltd. & Dalian University of Technology. 2024.
Weichai Power Scholarship. Weichai Power Co., Ltd. & Dalian University of Technology. 2025.