Yushi Sun

Yushi Sun

孙宇石
Senior Researcher at Tencent Games · LightSpeed Studios
Ph.D. from HKUST (2025), advised by Prof. Lei Chen

My research vision is to "Make Data Usable" — from ensuring annotation quality to developing effective data organization paradigms, to enhancing data usability in downstream applications such as RAG and AI Agents.

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🔬 Research Interests

Data Annotation Data Integration Data Organization Retrieval-Augmented Generation (RAG) Agent Memory Knowledge Graphs Text-to-SQL Reinforcement Learning

📄 Selected Publications

* Equal contribution    + Corresponding author

Preprints

Navigating the Mirage: A Dual-Path Agentic Framework for Robust Misleading Chart Question Answering
Preprint 2026 Yanjie Zhang, Yafei Li, Rui Sheng, Zixin Chen, Yanna Lin, Huamin Qu, Lei Chen, Yushi Sun+
Paper
APEX-SQL: Talking to the Data via Agentic Exploration for Text-to-SQL
Preprint 2026 Bowen Cao, Weibin Liao, Yushi Sun+, Dong Fang+, Haitao Li, Wai Lam
Paper
LakeHopper: Cross Data Lakes Column Type Annotation through Model Adaptation
Preprint 2026 Yushi Sun, Xijia Li, Nan Tang, Quanqing Xu, Chuanhui Yang, Lei Chen
Paper
MedKGI: Iterative Differential Diagnosis with Medical Knowledge Graphs and Information-Guided Inquiring
Preprint 2026 Qipeng Wang, Rui Sheng, Yafei Li, Huamin Qu, Yushi Sun+, Min Zhu+
Paper
CacheRAG: A Semantic Caching System for Retrieval-Augmented Generation in Knowledge Graph Question Answering
Preprint 2026 Yushi Sun, Lei Chen
Paper Data & Code

Published

KERAG: Knowledge-Enhanced Retrieval-Augmented Generation for Advanced Question Answering
EMNLP 2025 Yushi Sun, Kai Sun, Ethan Yifan Xu, Xiao Yang, Xin Luna Dong, Nan Tang, Lei Chen
Paper Data & Code
CRAG — Comprehensive RAG Benchmark
NeurIPS 2024 Xiao Yang*, Kai Sun*, Hao Xin*, Yushi Sun*, Nikita Bhalla, Xiangsen Chen, Sajal Choudhary, Rongze Daniel Gui, Ziran Will Jiang, Ziyu Jiang, Lingkun Kong, Brian Moran, Jiaqi Wang, Ethan Yifan Xu, An Yan, Chenyu Yang, Eting Yuan, Hanwen Zha, Nan Tang, Lei Chen, Nicolas Scheffer, Yue Liu, Nirav Shah, Rakesh Wanga, Anuj Kumar, Wen-tau Yih, Xin Luna Dong
Paper KDD Cup
Are Large Language Models a Good Replacement of Taxonomies?
VLDB 2024 Yushi Sun, Hao Xin, Kai Sun, Ethan Yifan Xu, Xiao Yang, Xin Luna Dong, Nan Tang, Lei Chen
Paper Data & Code Slides
Cross-domain-aware Worker Selection with Training for Crowdsourced Annotation
ICDE 2024 Yushi Sun, Jiachuan Wang, Peng Cheng, Libin Zheng, Lei Chen, Jian Yin
Paper Data & Code Slides
RECA: Related Tables Enhanced Column Semantic Type Annotation Framework
VLDB 2023 Yushi Sun, Hao Xin, Lei Chen
Paper Data & Code Slides

🏆 Awards & Honors

✉️ Contact

Email
ysunbp@gmail.com
GitHub
github.com/ysunbp
Google Scholar
Scholar Profile
Location
Shenzhen, China
Last updated Mar 2026