Ruiyang Ren

Ruiyang Ren is a final-year Ph.D. candidate at Renmin University of China, advised by Prof. Wayne Xin Zhao. He received his M.E. from Renmin University of China in 2022, supervised by Prof. Ji-Rong Wen and Prof. Wayne Xin Zhao, and his B.E. in Computer Science and Technology from Taishan College, Shandong University in 2019, supervised by Prof. Xuemeng Song and Prof. Liqiang Nie. His research interests include information retrieval and large language models.

• Reinforced Informativeness Optimization for Long-Form Retrieval-Augmented Generation
  Yuhao Wang, Ruiyang Ren^†, Yucheng Wang, Wayne Xin Zhao, Jing Liu, Hua Wu, Haifeng Wang
  ACL 2026
• A Survey of Large Language Models
  Wayne Xin Zhao, Kun Zhou, Junyi Li, Tianyi Tang, Xiaolei Wang, Yupeng Hou, Yingqian Min, Beichen Zhang, Junjie Zhang, Zican Dong, Yifan Du, Chen Yang, Yushuo Chen, Zhipeng Chen, Jinhao Jiang, Ruiyang Ren, Yifan Li, Xinyu Tang, Zikang Liu, Peiyu Liu, Jian-Yun Nie and Ji-Rong Wen
  Frontiers of Computer Science
• BEE-RAG: Balanced Entropy Engineering for Retrieval-Augmented Generation
  Yuhao Wang*, Ruiyang Ren*, Yucheng Wang, Jing Liu, Wayne Xin Zhao, Hua Wu, Haifeng Wang
  AAAI 2026
• SimpleDeepSearcher: Deep Information Seeking via Web-Powered Reasoning Trajectory Synthesis
  Shuang Sun, Huatong Song, Yuhao Wang, Ruiyang Ren, Jinhao Jiang, Junjie Zhang, Fei Bai, Jia Deng, Xin Zhao, Zheng Liu, Lei Fang, Zhongyuan Wang, Ji-Rong Wen
  Findings of EMNLP 2025
• STARec: An Efficient Agent Framework for Recommender Systems via Autonomous Deliberate Reasoning
  Chenghao Wu*, Ruiyang Ren*, Junjie Zhang*, Ruirui Wang, Zhongrui Ma, Qi Ye and Wayne Xin Zhao
  CIKM 2025
• LLM-based Search Assistant with Holistically Guided MCTS for Intricate Information Seeking
  Ruiyang Ren*, Yuhao Wang*, Junyi Li*, Jinhao Jiang, Wayne Xin Zhao, Wenjie Wang, Tat-Seng Chua
  SIGIR 2025
• Unveiling Knowledge Utilization Mechanisms in LLM-based Retrieval-Augmented Generation
  Yuhao Wang*, Ruiyang Ren*, Yucheng Wang, Wayne Xin Zhao, Jing Liu, Hua Wu and Haifeng Wang
  SIGIR 2025
• RAG-Star: Enhancing Deliberative Reasoning with Retrieval Augmented Verification and Refinement
  Jinhao Jiang, Jiayi Chen, Junyi Li, Ruiyang Ren, Shijie Wang, Wayne Xin Zhao, Yang Song and Tao Zhang
  NAACL 2025
• Self-Calibrated Listwise Reranking with Large Language Models
  Ruiyang Ren*, Yuhao Wang*, Kun Zhou, Wayne Xin Zhao, Wenjie Wang, Jing Liu, Ji-Rong Wen and Tat-Seng Chua
  WWW 2025
• Investigating the Factual Knowledge Boundary of Large Language Models with Retrieval Augmentation
  Ruiyang Ren*, Yuhao Wang*, Yingqi Qu, Wayne Xin Zhao, Jing Liu, Hao Tian, Hua Wu, Ji-Rong Wen and Haifeng Wang
  COLING 2025
• REAR: A Relevance-Aware Retrieval-Augmented Framework for Open-domain Question Answering
  Yuhao Wang*, Ruiyang Ren*, Junyi Li, Wayne Xin Zhao, Jing Liu and Ji-Rong Wen
  EMNLP 2024
• BASES: Large-scale Web Search User Simulation with Large Language Model based Agents
  Ruiyang Ren, Peng Qiu, Yingqi Qu, Jing Liu, Wayne Xin Zhao, Hua Wu, Ji-Rong Wen and Haifeng Wang
  Findings of EMNLP 2024
• The Dawn After the Dark: An Empirical Study on Factuality Hallucination in Large Language Models
  Junyi Li, Jie Chen, Ruiyang Ren, Xiaoxue Cheng, Wayne Xin Zhao, Jian-Yun Nie and Ji-Rong Wen
  ACL 2024
• Dense Text Retrieval based on Pretrained Language Models: A Survey
  Wayne Xin Zhao, Jing Liu, Ruiyang Ren and Ji-Rong Wen
  TOIS 2024
• A Thorough Examination on Zero-shot Dense Retrieval
  Ruiyang Ren, Yingqi Qu, Jing Liu, Wayne Xin Zhao, Qifei Wu, Yuchen Ding, Hua Wu, Haifeng Wang and Ji-Rong Wen
  Findings of EMNLP 2023
• TOME: A Two-stage Approach for Model-based Retrieval
  Ruiyang Ren, Wayne Xin Zhao, Jing Liu, Hua Wu, Ji-Rong Wen and Haifeng Wang
  ACL 2023
• RocketQAv2: A Joint Training Method for Dense Passage Retrieval and Passage Re-ranking
  Ruiyang Ren*, Yingqi Qu*, Jing Liu, Wayne Xin Zhao, Qiaoqiao She, Hua Wu, Haifeng Wang and Ji-Rong Wen
  EMNLP 2021
• PAIR: Leveraging Passage-Centric Similarity Relation for Improving Dense Passage Retrieval
  Ruiyang Ren*, Shangwen Lv*, Yingqi Qu, Jing Liu, Wayne Xin Zhao, Qiaoqiao She, Hua Wu, Haifeng Wang and Ji-Rong Wen
  Findings of ACL 2021
• RocketQA: An Optimized Training Approach to Dense Passage Retrieval for Open-Domain Question Answering
  Yingqi Qu, Yuchen Ding, Jing Liu, Kai Liu, Ruiyang Ren, Wayne Xin Zhao, Daxiang Dong, Hua Wu and Haifeng Wang
  NAACL 2021
• Fine-Grained Privacy Detection with Graph-Regularized Hierarchical Attentive Representation Learning
  Xiaolin Chen, Xuemeng Song, Ruiyang Ren, Lei Zhu, Zhiyong Cheng and Liqiang Nie
  TOIS 2020
• Sequential Recommendation with Self-Attentive Multi-Adversarial Network
  Ruiyang Ren, Zhaoyang Liu, Yaliang Li, Wayne Xin Zhao, Hui Wang, Bolin Ding and Ji-Rong Wen
  SIGIR 2020

• Emulating Clinician Cognition via Self-Evolving Deep Clinical Research
  Ruiyang Ren*, Yuhao Wang*, Yunsen Liang, Lan Luo, Jing Liu, Haifeng Wang, Cong Feng, Yinan Zhang, Chunyan Miao, Ji-Rong Wen, Wayne Xin Zhao
  arXiv 2026