Research Interests
Machine Translation
Document-level neural machine translation, speech translation, and image translation — exploring high-quality translation under long-context and multimodal settings.
LLM-based Agent
Long-horizon task solving, complex reasoning, and multi-tool use — studying agents' planning, execution, and collaboration in real-world tasks.
Self-evolving Agent
Self-feedback, self-improvement, and continual learning — exploring agents' capacity for autonomous evolution in long-horizon tasks and tool use.
Publications
DecEx-RAG: Boosting Agentic Retrieval-Augmented Generation with Decision and Execution Optimization via Process Supervision
Yongqi Leng, Yikun Lei, Xikai Liu, Meizhi Zhong, Bojian Xiong, Yurong Zhang, Yan Gao, Yao Hu, Deyi Xiong
Think-Search-Patch: A Retrieval-Augmented Reasoning Framework for Repository-Level Code Repair
Bojian Xiong, Yikun Lei, Xikai Liu, Shaowei Zhang, Pengyun Zhu, Yan Liu, Yongqi Leng, Ling Shi, Meizhi Zhong, Yurong Zhang, Yan Gao, Yao Hu, Deyi Xiong
ZigZagKV: Dynamic KV Cache Compression for Long-context Modeling based on Layer Uncertainty
Meizhi Zhong, Xikai Liu, Chen Zhang, Yikun Lei, Yan Gao, Yao Hu, Kehai Chen, Min Zhang
Experience
Algorithm Engineer
Sep 2025 - Present
China
Building the AI search content supply system and optimizing Agentic RL algorithms.
Algorithm Engineer
Nov 2023 - Sep 2025
China
Built LLM-based Agent systems and a generative AI search engine.
Quantitative Research Intern
Aug 2023 - Nov 2023
China
End-to-end mid-to-high-frequency factor mining.
Algorithm Research Intern
Sep 2022 - Aug 2023
China
Research on end-to-end speech translation and LLM-enhanced machine translation.
M.S. · Natural Language Processing
Sep 2021 - Mar 2024
China
TJUNLP Lab, advised by Prof. Deyi Xiong. Research in document-level neural machine translation.
Exchange Student · Informatics
Sep 2019 - Jan 2020
Japan
B.E. · Software Engineering
Sep 2017 - Sep 2021
China