Welcome to my personal website!

I am a first-year PhD student under Professor Jing Li’s supervision at KLC Lab of Harbin Institute of Technology (HIT) based on Shenzhen, China.

I have recently embarked on my research journey in the world of Natural Language Processing (NLP). Here is my research interest:

• From Inner Workings Towards Value Alignment; From Powerful Towards Useful.

I am grateful to my supervisor, Professor Jing Li, for his invaluable guidance and continuous encouragement. Besides, I would also like to thank Professor Chen Ling, Professor Wei Wang, Hongbin Na and Zimu Wang, for their pleasant collaboration in research and professional help during my application.

Degrees

• Ph.D. in Computer Science, Harbin Institute of Technology, 2029.06 (expected)
• M.S. in Data Science, the University of Sydney, 2025.07
  • GPA: 3.25/4.00
• B.A. in Economics, the University of Sydney, 2023.12
  • GPA: 3.85/4.00

Papers

(The asterisk * appearing after authors means equal contribution.)
(OSS means One-Sentence-Summary about the paper.)

• [COLING2025] [2024] Detecting Conversational Mental Manipulation with Intent-Aware Prompting
  • Author: Jiayuan Ma*, Hongbin Na*, Zimu Wang, Yining Hua, Yue Liu, Wei Wang, Ling Chen
  • Award: Best Short Paper, Oral
  • OSS: Based on Theory of Mind as motivation, a new approach, Intent-Aware Prompting (IAP), was introduced to detect mental manipulation in dialogues, which notably reduces false negatives and improving overall performance on detection.
• [CLPsych2025] [2025] From Posts to Timelines: Modeling Mental Health Dynamics from Social Media Timelines with Hybrid LLMs
  • Author: Zimu Wang*, Hongbin Na*, Rena Gao, Jiayuan Ma, Yining Hua, Ling Chen, Wei Wang
  • Award: Ranked 3rd in the Shared Task
  • OSS: This work proposes a hybrid large language model framework to model individual mental health dynamics by first identifying adaptive and maladaptive evidence in social media posts, and then synthetically generating user well-being scores as well as post-level and timeline-level summaries.

Internships

• 2023.12 - 2024.02, ESG Research Intern
  • PwC China (Shanghai, China)
• 2023.06 - 2023.08, VC Research Intern
  • Shenzhen Capital Group Co. Ltd (Shanghai, China)
• 2022.09 - 2022.12, IBD Research Intern
  • China Securities Co. Ltd (Beijing, China)
• 2021.06 - 2021.07, Consulting Assistant Intern
  • Capgemini Consulting (China) Co. Ltd (Hangzhou, China)

Skills

• Computing
  • Python, R, STATA, MS Office
• Languages
  • Chinese (Native), English (Fluent), Spanish (B1), Japanese (N4)
• Certificates
  • ACCA (passed 5/13)