Chak Tou Leong (Cooper, Zetao Liang, 梁泽涛) PhD Student Department of Computing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China Email: chak-tou.leong (at) connect.polyu.hk Github   |   Google Scholar   |   Twitter

I am a second-year PhD student at Department of Computing, The Hong Kong Polytechnic University (PolyU), advised by Prof. Maggie Wenjie Li. Before that, I received my BEng degrees from the School of Computer Science, Wuhan University, in 2022.

Research

I have broad interests in Natural Language Processing (NLP). Especially, I focus on the following directions:

• Mechanistic Interpretability (MI). I am pursuing the interpretability of NLP models from a mechanistic perspective, which aims to understand the model's internal mechanisms of the model's behaviors.
• MI for AI Alignment. I am interested in applying MI to AI Alignment, such as inspecting the alignment efficacy of an LLM, identifying misaligned outputs, and elucidating why it yields such outputs using MI.

Selected Publications

(see full list in Google Scholar)

2023 - Present

	COOPER: Coordinating Specialized Agents towards a Complex Dialogue Goal Yi Cheng, Wenge Liu, Jian Wang, Chak Tou Leong, Yi Ouyang, Wenjie Li, Xian Wu, Yefeng Zheng. The 38th Annual AAAI Conference on Artificial Intelligence (AAAI), 2024. [arXiv]
	Self-Detoxifying Language Models via Toxification Reversal Chak Tou Leong*, Yi Cheng*, Jiashuo Wang, Jian Wang, and Wenjie Li. Proceedings of the Conference on Empirical Methods in Natural Language Processing (EMNLP), 2023. [arXiv] [code]
	Target-oriented Proactive Dialogue Systems with Personalization: Problem Formulation and Dataset Curation Jian Wang, Yi Cheng, Dongding Lin, Chak Tou Leong, and Wenjie Li. Proceedings of the Conference on Empirical Methods in Natural Language Processing (EMNLP), 2023. [arXiv] [code]

Professional Activities

Teaching Assistant

• COMP 4133: Information Retrieval, Fall 2023 PolyU
• COMP 5423: Natural Language Processing, Spring 2023 PolyU

Honors

• 2020-2021 Outstanding Prize Scholarships for Hong Kong, Macau and Overseas Chinese Students