Samm Sun

Researcher, University of Macau

Joined

November 2021

Names

Samm Sun (Preferred)

Xingwu Sun

Emails

****@tencent.com (Confirmed)

****@gmail.com (Confirmed)

Personal Links

Career & Education History

Researcher

University of Macau (um.edu.mo)

2026 – 2030

Researcher

Tencent Hunyuan (tencent.com)

2021 – 2025

Researcher

Meituan Inc. (meituan.com)

2019 – 2021

Advisors, Relations & Conflicts

PhD Advisor

Cheng-Zhong Xu

2022 – 2026

Expertise

Model Pre-training

2019 – 2025

Natural Language Processing

2013 – 2025

Question Answering

2013 – 2019

Publications

Union-of-Experts: Experts in Mixture-of-Experts are Secretly Routers
Songhao Wu, Ang Lv, Ruobing Xie, Xingwu Sun, Di Wang, Rui Yan, Yankai Lin
- ICLR 2026 Conference Withdrawn Submission
- Readers: Everyone
More Expressive Attention with Negative Weights
Ang Lv, Ruobing Xie, Shuaipeng Li, Jiayi Liao, Xingwu Sun, Zhanhui Kang, Di Wang, Rui Yan
- ICLR 2026 Conference Withdrawn Submission
- Readers: Everyone
The Climb Carves Wisdom Deeper Than the Summit: On the Importance of Reasoning Patterns
Ang Lv, Ruobing Xie, Xingwu Sun, Zhanhui Kang, Rui Yan
- ICLR 2026 Conference Withdrawn Submission
- Readers: Everyone
Towards a Comprehensive Scaling Law of Mixture-of-Experts
Zhao Guoliang, Yuhan Fu, Shuaipeng Li, Xingwu Sun, Ruobing Xie, An Wang, Weidong Han, Zhen Yang, Weixuan Sun, Yudong Zhang, Cheng-zhong Xu, Di Wang, Jie Jiang
- Submitted to ICLR 2026
- Readers: Everyone
Proximal Supervised Fine-Tuning
Wenhong Zhu, Ruobing Xie, Rui Wang, Xingwu Sun, Di Wang, Pengfei Liu
- ICLR 2026 Poster
- Readers: Everyone
HS-SFT: Hybrid Sparse Supervised Fine-tuning for Offline LLM KV Cache Eviction
Yuxin Zhang, Ruobing Xie, Wenhao Li, Jun Xia, Xiawu Zheng, Xingwu Sun, Di Wang, Rongrong Ji
- ICLR 2026 Conference Withdrawn Submission
- Readers: Everyone
Fast Data Mixture Optimization via Gradient Descent
Haoru Tan, Sitong Wu, Yanfeng Chen, Jun Xia, Ruobing Xie, Bin Xia, Xingwu Sun, Xiaojuan Qi
- ICLR 2026 Poster
- Readers: Everyone
PT$^2$-LLM: Post-Training Ternarization for Large Language Models
Xianglong Yan, ChengZhu Bao, Zhiteng Li, Tianao Zhang, Kaicheng Yang, Haotong Qin, Ruobing Xie, Xingwu Sun, Yulun Zhang
- ICLR 2026 Poster
- Readers: Everyone
Understanding Data Influence in Reinforcement Finetuning
Haoru Tan, Xiuzhe Wu, Sitong Wu, Shaofeng Zhang, Yanfeng Chen, Xingwu Sun, Jeanne Shen, XIAOJUAN QI
- NeurIPS 2025 poster
- Readers: Everyone
Autonomy-of-Experts Models
Ang Lv, Ruobing Xie, Yining Qian, Songhao Wu, Xingwu Sun, Zhanhui Kang, Di Wang, Rui Yan
- ICML 2025 poster
- Readers: Everyone

View all 56 publications

Co-Authors

View all 225 co-authors