LAMDA Group · Nanjing University

Machine learning researcher working on continual learning and model reuse.

I am a M.Sc. student at the School of Artificial Intelligence, Nanjing University, and a member of the LAMDA Group led by Prof. Zhi-Hua Zhou.

I received my B.Sc. degree in Intelligent Finance from Southwestern University of Finance and Economics in June 2025. In the same year, I was admitted to the M.Sc. program at Nanjing University, supervised by Prof. Han-Jia Ye, without entrance examination.

Continual Learning Model Reuse Test-Time Adaptation LLM Routing

News

Research Interests

My research interests include machine learning and data mining. Currently, I focus on model reuse, continual learning, efficient adaptation, and robust evaluation of learning systems.

Selected Publications

MMR-Bench teaser ECCV'26

MMR-Bench: A Comprehensive Benchmark for Multimodal LLM Routing

Haoxuan Ma*, Guannan Lai*, Han-Jia Ye

ECCV 2026

* Equal contribution.

Paper Code Dataset
GOLD teaser CVPR'26

The Golden Subspace: Where Efficiency Meets Generalization in Continual Test-Time Adaptation

Guannan Lai, Da-Wei Zhou, Zhenguo Li, Han-Jia Ye

CVPR 2026, CCF-A

Paper Code
EDGE teaser ICLR'26

The Lie of the Average: How Class Incremental Learning Evaluation Deceives You?

Guannan Lai, Da-Wei Zhou, Xin Yang, Han-Jia Ye

ICLR 2026, CCF-A

Paper Code
GDDSG teaser CVPR'25

Order-robust Class Incremental Learning: Graph-driven Dynamic Similarity Grouping

Guannan Lai, Yujie Li, Xiangkun Wang, Junbo Zhang, Tianrui Li, Xin Yang

CVPR 2025, CCF-A

Paper Code
RouteJudge teaser ICMLW'26

RouteJudge: Preference-Based Evaluation of LLM Routers under Pluralistic User Preferences

Guannan Lai, Haoran Hu, Han-Jia Ye

Pluralistic Alignment Workshop at ICML 2026

Project Website arXiv Paper OpenReview
DARS teaser

From Sampled Outcomes to Capability Distributions: Rethinking Supervision for LLM Routing

Guannan Lai, Haoran Hu, Long Chen, Zhenguo Li, Han-Jia Ye

Preprint

Paper Code Dataset
EquiRouter teaser

When Routing Collapses: On the Degenerate Convergence of LLM Routers

Guannan Lai, Han-Jia Ye

Preprint

Paper Code

Awards & Honors

  • 2025, Outstanding Graduate of Sichuan Province
  • 2024, Bronze Medal, Huawei Cup 2023 ICPC Asia-East Continent Final Contest
  • 2024, Bronze Medal, CCPC Final 2023
  • 2023, Silver Medal, ICPC Asia Hangzhou Regional Contest
  • 2023, Gold Medal, Sichuan Province College Student Programming Competition
  • 2023, ACM Chengdu Chapter Outstanding College Student Award
  • 2022, 2023, 2024, National Scholarship for Undergraduates

Academic Service

  • Conference Reviewer: ICML, NeurIPS, CVPR, ACM SIGKDD, COLM
  • Journal Reviewer: IEEE TPAMI, IJCV, Pattern Recognition, TMLR

Blog

LLM Routing 2026-03

LLM Routing 论文分享（ICLR 2026）

整理 ICLR 2026 中与 LLM 路由相关研究的最新进展。
LLM Routing 2026-02

大模型路由：分岔路口的答案

介绍大模型路由的问题建模、目标函数、路由策略、评价体系与工程落地。

Contact

Email
laign (at) lamda.nju.edu.cn
Address
Guannan Lai, National Key Laboratory for Novel Software Technology, Nanjing University, Xianlin Campus Mailbox 603, 163 Xianlin Avenue, Qixia District, Nanjing 210023, China.
中文地址
南京市栖霞区仙林大道 163 号，南京大学仙林校区 603 信箱，软件新技术国家重点实验室，210023。