Wun Yu, Lucas Chan

I rarely wear glassess.

I’m Lucas Chan, an MPhil student at HKUST, working under the guidance of Professor Yangqiu Song. My research spans embedding models and LLM reasoning. I hold a Bachelor’s degree with double major in Computer Science & Electronic Engineering (First Class Honours) from HKUST.

I have been working as an AI Research Intern at Amber Group, where my work focuses on LLM training and AI Agent applications. In my spare time, I also build some interesting projects. View my GitHub to explore those gripping projects.

Research Interests

Representation Learning Latent Space, Representation Similarity, and Manifold
Large Language Models Reasoning, training, alignment, and safety
AI Agents Autonomous systems, tool use, and multi-agent cooperation

News

Jan 30, 2026	My paper “Do Reasoning Models Enhance Embedding Models” is published on Arxiv! Feel free to check out the paper and the repository.
Jan 25, 2026	My paper “An Effective and Cost-Efficient Agentic Framework for Ethereum Smart Contract Auditing” is published on Arxiv, a work during the internship in Amber Group! Feel free to check out the paper.

Selected publications

Do Reasoning Models Enhance Embedding Models?

Wun Yu Chan, Shaojin Chen, Huihao Jing, and 5 more authors

2026

DOI arXiv Bib HTML PDF Blog Code

@misc{chan2026reasoningmodelsenhanceembedding,
  doi = {10.48550/arXiv.2601.21192},
  title = {Do Reasoning Models Enhance Embedding Models?},
  author = {Chan, Wun Yu and Chen, Shaojin and Jing, Huihao and Lau, Kwun Hang and Li, Elton Chun-Chai and Wang, Zihao and Li, Haoran and Song, Yangqiu},
  year = {2026},
  archiveprefix = {arXiv},
  primaryclass = {cs.AI},
}

An Effective and Cost-Efficient Agentic Framework for Ethereum Smart Contract Auditing

Xiaohui Hu^*, Wun Yu Chan^*, Yuejie Shi, and 5 more authors

2026

DOI arXiv Bib HTML PDF

@misc{hu2026effectivecostefficientagenticframework,
  doi = {10.48550/arXiv.2601.17833},
  title = {An Effective and Cost-Efficient Agentic Framework for Ethereum Smart Contract Auditing},
  author = {Hu, Xiaohui and Chan, Wun Yu and Shi, Yuejie and Sun, Qumeng and Wang, Wei-Cheng and Wu, Chiachih and Wang, Haoyu and He, Ningyu},
  year = {2026},
  archiveprefix = {arXiv},
  primaryclass = {cs.CR},
}