Su Xiaotian

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PhD Student


ETH Zurich

Hi! I’m Su Xiaotian (苏晓甜). I’m a first-year PhD student at ETHz, supervised by Prof. April Wang and Prof. Mrinmaya Sachan. I am also associated with the ETH AI Center ETHz. Additionally, I am a representative for the SwissCHI student chapter.

I am interested in interdisciplinary study, especially the human-AI interaction (HAI), natural language processing (NLP), human cognition and education. I am deeply passionate about developing AI tools to support instructors and learners.

Previously I obtained an MSc in Data Science from EPFL where I worked with Prof. Tanja Käser and Prof. Thiemo Wambsganß on AI-assisted writing.

Besides research, I enjoy Jazz dance 💃, badminton 🏸, and photography 📷. Feel free to reach out to me if you want to play badminton together or join in on a hike 🏔️.

I am always open to new collaborations. Feel free to reach out! 😉

Selected publications

  1. CHI25LBW.png
    The Stress of Improvisation: Instructors’ Perspectives on Live Coding in Programming Classes
    Xiaotian Su, and April Wang
    In Extended Abstracts of the 2025 CHI Conference on Human Factors in Computing Systems , 2025
  2. GuidedCopilot.png
    Do It For Me vs. Do It With Me: Investigating User Perceptions of Different Levels of Automation in Copilots for Feature-Rich Software
    Anjali Khurana , Xiaotian Su, April Wang , and 1 more author
    In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI 2025) , Apr 2025
  3. loop.png
    Closing the Loop: Learning to Generate Writing Feedback via Language Model Simulated Student Revisions
    Inderjeet Jayakumar Nair , Jiaye Tan , Xiaotian Su, and 3 more authors
    In Proceedings of the 2024 Conference on Empirical Methods in Natural Language Processing , Nov 2024
  4. bias.png
    Unraveling Downstream Gender Bias from Large Language Models: A Study on AI Educational Writing Assistance
    Xiaotian Su*, Thiemo Wambsganss* , Vinitra Swamy , and 3 more authors
    In Findings of the Association for Computational Linguistics: EMNLP 2023 , Dec 2023