DU Yiming

Email: ydu@se.cuhk.edu.hk

ymdu.jpg

Room 615, ERB

The Chinese University of Hong Kong

Shatin, New Territories, Hong Kong, China

Hi, I am Yiming (Elvin) DU. I am a PhD candidate at the Chinese University of Hong Kong, pursuing my PhD in the Department of SEEM under the supervision of Professor Kam-Fai Wong. I conduct my research at the MoE Key Laboratory of High Confidence Software Technologies (MoE Lab).

From Jan. 2025 to June 2025, I was a visiting researcher at EdinburghNLP, working with Prof. Jeff Z. Pan. I have also been a research intern at Huawei Noah’s Ark Lab (mentored by Baojun Wang), SenseTime Research (mentored by Fei Tan), and previously did research stints at Imperial College London (with Prof. Lucia Specia) and City University of Hong Kong (Web Mining Lab). Prior to CUHK, I obtained my M.Eng. and B.Eng. in Computer Science from Southeast University.

My research lies at the intersection of memory, dialogue, and LLM agents. My long-term goal is to build personal AI assistants that can remember, reason over time, and self-evolve through interaction.

Research Interests

Honors & Awards

  • 2024 — Overseas Research Attachment Programme (ORAP) Award, CUHK.
  • 2024 — Best Paper Award, ACL-SIGHAN 2024 (for PerLTQA).
  • 2020 — 1st Place, Jiangsu Postgraduate Mathematical Modeling Innovation Practice Competition.
  • 2018 – 2020 — Excellent Scholarships: Shenzhen Stock Exchange, Southeast University, Huawei, Keyuan Automation.
  • 2018 — 1st Place, Chinese Undergraduate Computer Design Contest; Meritorious Winner, Mathematical Contest in Modeling (MCM).

Academic Services

  • Reviewer: ACL, EMNLP, IJCAI, Knowledge-Based Systems (KBS), etc.
  • Patent: A dialogue memory storage, extraction and electronical device — Baojun Wang, Yiming Du, Kam-Fai Wong (Huawei, 2024).

news

No news so far...

selected publications

  1. memory-t1.png
    MEMORY-T1: Reinforcement Learning for Temporal Reasoning in Multi-Session Agents
    Yiming Du, Baojun Wang, Yifan Xiang, and 11 more authors
    In International Conference on Learning Representations (ICLR), 2026
  2. memory-tod.png
    MemGuide: Intent-Driven Memory Selection for Goal-Oriented Multi-Session LLM Agents
    Yiming Du, Bingbing Wang, Yang He, and 7 more authors
    In Proceedings of the AAAI Conference on Artificial Intelligence, 2026
    Accepted, Oral. Co-first author with Bingbing Wang.
  3. resure.png
    ReSURE: Regularizing Supervision Unreliability for Multi-turn Dialogue Fine-tuning
    Yiming Du, Yifan Xiang, Bin Liang, and 3 more authors
    In Proceedings of the 2025 Conference on Empirical Methods in Natural Language Processing (EMNLP), 2025
  4. flexmem.png
    Flexibly Utilize Memory for Long-Term Conversation via a Fragment-then-Compose Framework
    Cai Ke, Yiming Du, Bin Liang, and 8 more authors
    In Proceedings of the 2025 Conference on Empirical Methods in Natural Language Processing (EMNLP), 2025
    Accepted, Oral.
  5. memory-survey.png
    Rethinking Memory in AI: Taxonomy, Operations, Topics, and Future Directions
    Yiming Du, Wenyu Huang, Danna Zheng, and 5 more authors
    arXiv preprint arXiv:2505.00675, 2025
  6. memlens.png
    MemLens: Benchmarking Multimodal Long-Term Memory in Large Vision-Language Models
    Xiyu Ren, Zhaowei Wang, Yiming Du, and 11 more authors
    arXiv preprint arXiv:2605.14906, 2025
  7. memory-multi-modal.png
    A New Formula for Sticker Retrieval: Reply with Stickers in Multi-Modal and Multi-Session Conversation
    Bingbing Wang, Yiming Du, Bin Liang, and 4 more authors
    In Proceedings of the AAAI Conference on Artificial Intelligence, 2025
    Co-first author.
  8. mlingconf.png
    A Comprehensive Study of Multilingual Confidence Estimation on Large Language Models
    Boyang Xue, Hongru Wang, Rui Wang, and 4 more authors
    In Findings of the Association for Computational Linguistics: ACL 2025, 2025
  9. memory-long-term.png
    PerLTQA: A Personal Long-Term Memory Dataset for Memory Classification, Retrieval, and Fusion in Question Answering
    Yiming Du, Hongru Wang, Zhengyi Zhao, and 5 more authors
    In Proceedings of the 10th SIGHAN Workshop on Chinese Language Processing (SIGHAN-10), 2024
    Best Paper Award.