YIXIA LI Ph.D.

Google Scholar
liyixia[AT]me.com
https://liyixia.me

Education

Southern University of Science and Technology
Shenzhen, China
Ph.D. in Mathematics
2023 - 2027
  • Supervisor: Dr. Guanhua Chen.
  • Research Area: Efficient Methods in LLMs and Agentic Reinforcement Learning.
The Hong Kong Polytechnic University
Hong Kong, China
M.Sc. in Computer Science (Data Science) with Distinction
2021 - 2023
  • Rank: Top 5%, GPA: 3.8/4.0.
Guangzhou University
Guangzhou, China
B.Sc. in Statistics
2017 - 2021
  • Rank: Top 5%, GPA: 3.7/4.0.
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Publications

1. Yan Yang*, Yixia Li*, Hongru Wang, Xuetao Wei, James Jianqiao Yu, Yun Chen, Guanhua Chen. ImPart: Importance-Aware Delta-Sparsification for Improved Model Compression and Merging in LLMs. ACL Main, 2025 [paper][code]
2. Yixia Li*, Boya Xiong*, Guanhua Chen, Yun Chen. SeTAR: Out-of-Distribution Detection with Selective Low-Rank Approximation. NeurIPS, 2024 [paper][code]
3. Zhiwen Ruan*, Yixia Li*, He Zhu, Longyue Wang, Weihua Luo, Kaifu Zhang, Yun Chen, Guanhua Chen. LayAlign: Enhancing Multilingual Reasoning in Large Language Models via Layer-Wise Adaptive Fusion and Alignment Strategy. NAACL Findings, 2025 [paper][code]
4. Yixia Li, Rong Xiang, Yanlin Song, Jing Li. UniPoll: A Unified Social Media Poll Generation Framework via Multi-Objective Optimization. TNNLS, 2024 [paper][code]
5. Zhiwen Ruan, Yixia Li, Yefeng Liu, Yun Chen, Weihua Luo, Peng Li, Yang Liu, Guanhua Chen. G2: Guided Generation for Enhanced Output Diversity in LLMs. EMNLP Main, 2025 [paper][code]
6. Hanqing Wang, Yixia Li, Shuo Wang, Guanhua Chen, Yun Chen. MiLoRA: Harnessing Minor Singular Components for Parameter-Efficient LLM Finetuning. NAACL Main, 2025 [paper][code]
7. Zhiwen Ruan, Yixia Li, He Zhu, Yun Chen, Peng Li, Yang Liu, Guanhua Chen. Enhancing Large Language Model Reasoning via Selective Critical Token Fine-Tuning. Under Review, 2025 [paper]
8. Tianci Xue, Ziqi Wang, Yixia Li, Yun Chen, Guanhua Chen. PACIT: Unlocking the Power of Examples for Better In-Context Instruction Tuning. ACL Findings, 2024 [paper][code]
9. He Zhu, Yifan Ding, Yicheng Tao, Zhiwen Ruan, Yixia Li, Wenjia Zhang, Yun Chen, Guanhua Chen. FANNO: Augmenting High-Quality Instruction Data with Open-Sourced LLMs Only. ACL Findings, 2025 [paper][code]
10. Lingjie Jiang, Shaohan Huang, Xun Wu, Yixia Li, Dongdong Zhang, Furu Wei. Vis-Codex: Unified Multimodal Code Generation via Merging Vision and Coding Models. Under Review, 2025 [paper][code]
11. Rong Xiang, Emmanuele Chersoni, Yixia Li, Jing Li, Chu-Ren Huang. Cantonese Natural Language Processing in the Transformers Era, Survey and Challenges. Journal of Language Resources and Evaluation, 2024 [paper]
12. Yixia Li, Shudong Li, Yanshan Chen, Peiyan He, Xiaobo Wu, Weihong Han. Electric Power Grid Invulnerability Under Intentional Edge-Based Attacks. Communications in Computer and Information Science, 2019 [paper]
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Internships

Microsoft Research Asia | GenAI
Beijing, China
Supervisor: Dr. Dongdong Zhang
2025.06 - Now
  • Efficient Large Language Models
  • Reasoning Models
PolyU SMART Lab
Hong Kong, China
Supervisor: Dr. Jing Li
2022.08 - 2023.07
  • Social Media Opinion Polling
  • Cantonese Medical Dialogue System
Huawei
Shenzhen, China
Supervisor: Jingyuan Yang
2022.06 - 2022.08
  • Extractive Document Q&A
  • Knowledge-enhanced Dialogue System
  • Chinese ASR Entity Correction
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Academic Services

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Awards and Honors