Ziqi Zhao's Homepage

Ziqi Zhao 赵子奇

Hi, I am a first-year PhD student at The Hong Kong Polytechnic University, supervised by Prof. Xiao-Ming Wu. Before that, I was a master's student at Shandong University, supervised by Prof. Zhaochun Ren and Prof. Xin Xin.

My current research interests lie in LLM post-training and reinforcement learning. I am open to any collaboration 😄.

News

2026.09: We released our paper on multi-agent system for data-centric recursive self-improvement (RSI).
2026.05: We released our paper on reflective on-policy self-distillation (OPSD) for language model reasoning.
2026.04: One paper on reinforcement learning with verifiable rewards (RLVR) has been accepted by ACL'2026 Main Conference!
2025.05: One paper on model-based offline reinforcement learning has been accepted by KDD'2025!
2025.05: Started an research intern on LLM post-training at Baidu.
2025.04: One paper on reinforcement learning for sequential recommendation has been accepted by SIGIR'2025!
2025.01: One paper on LLM-based named entity recognition has been accepted by WWW'2025!.

* Equal contribution

	Gödel Forest: Balancing Search Depth and Breadth for Data-Centric Recursive Self-Improvement Ziqi Zhao, Fanqing Meng, Haocheng Lu, Lingxiao Du, Qiguang Chen, Mengkang Hu, Xiao-Ming Wu Preprint
	Beyond Imitation: Reflective On-Policy Self-Distillation for LLM Reasoning Ziqi Zhao, Xinyu Ma, Liu Yang, Yujie Feng, Daiting Shi, Jingzhou He, Xin Xin, Zhaochun Ren, Xiao-Ming Wu Preprint
	Reinforced Efficient Reasoning via Semantically Diverse Exploration Ziqi Zhao, Zhaochun Ren, Jiahong Zou, Liu Yang, Zhiwei Xu, Xuri Ge, Zhumin Chen, Xinyu Ma, Daiting Shi, Shuaiqiang Wang, Dawei Yin, Xin Xin ACL'2026 Main
	Offline Trajectory Optimization for Offline Reinforcement Learning Ziqi Zhao, Zhaochun Ren, Liu Yang, Yunsen Liang, Fajie Yuan, Pengjie Ren, Zhumin Chen, Xin Xin KDD'2025
	Improving Sequential Recommenders through Counterfactual Augmentation of System Exposure Ziqi Zhao, Zhaochun Ren, Jiyuan Yang, Zuming Yan, Zihan Wang, Liu Yang, Pengjie Ren, Zhumin Chen, Maarten de Rijke, Xin Xin SIGIR'2025
	A cooperative multi-agent framework for zero-shot named entity recognition Zihan Wang, Ziqi Zhao, Yougang Lyu, Zhumin Chen, Maarten de Rijke, Zhaochun Ren WWW'2025

2025.05 - Now : Research Intern, Search Team, Baidu, Beijing, China
2024.12 - 2025.05 : Applied Research Intern, Computational Advertising Team, Kuaishou, Beijing, China
2023.09 - 2024.12 : Research assistant, IR Lab, Shandong University, Qingdao, China

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