I am Hongjin Qian, a postdoctoral researcher at BAAI and Peking University, working with Prof. Tiejun Huang and Dr. Zhongyuan Wang. I earned my PhD in 2024 from the Gaoling School of Artificial Intelligence (GSAI) at Renmin University of China, under the supervision of Prof. Zhicheng Dou and Prof. Ji-Rong Wen . I hold a Master’s degree from the University of Sydney (2019) and a Bachelor’s degree from Nankai University (2017). My experience includes research internships at Huawei and WeChat Group, as well as contributions to AI startups.
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Search Agent2025-Present
Agentic search is a retrieval approach where an AI agent actively plans, decomposes, and executes multi-step information-seeking actions to answer complex user questions.Publications
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Retrieval-Augmentation Generation2022-Present
Retrieval-Augmented Generation (RAG) is a method that first retrieves relevant information from an external knowledge source and then combines it with the model’s input to generate more accurate and informative responses.Publications
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Conversational Search2021-Present
Conversational search is an interactive search paradigm where users and systems engage in a dialogue, allowing queries, clarifications, and refinements across multiple turns to iteratively reach more accurate and context-aware results.Publications
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Others2020-Present
Dialogue System, QA System, Ranking, Retrieval, Theory, etc.Publications
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Nov 2023 - Present, Beijing, China
Beijing Academy of Artificial Intelligence (BAAI) is a non-profit research institute dedicated to promoting collaboration among academia and industries, as well as fostering top talents and a focus on long-term research on the fundamentals of AI technology.
Jun 2023 - Oct 2023, Beijing, China
Apr 2022 - May 2023, Beijing, China
Sept 2020 - Jun 2024, Beijing, China
The Gaoling School of Artificial Intelligence (GSAI) at Renmin University of China (RUC) is a prestigious institution dedicated to shaping the future of AI. GSAI has consistently ranked first in Information Retrieval worldwide, according to CSRankings, from 2022 to 2024.
Elensdata is a start-up company which offers high-calibre data science/AI solutions that help real businesses, in media, finance, etc.
20 Patents in Total
18 Granted Patents
6 First-Inventor Patents
Reviewer / PC Member:
Neurips, ICLR, ICML, ACL, EMNLP, MM
EACL, ACL ARR, SIGKDD, theWebConf, TOIS
This project focuses on exploring techniques to expand the knowledge scale and memory scale at the input stage. The goal is to overcome the limitations of current LLMs in complex knowledge reasoning, knowledge memorization, and global knowledge understanding. This will be achieved by constructing a hierarchical memory mechanism that enables the scaling, memorization, and dynamic, coordinated retrieval of multi-source, heterogeneous knowledge.
MemoRAG is a next-generation retrieval-augmented generation system with long-term memory, enabling superior context-aware information retrieval and enhanced performance on complex tasks where traditional RAG systems struggle.
Informatica is a comprehensive collection of systematic research projects focused on deep research systems. Our mission is to provide open-source, scalable frameworks, datasets, data synthesis methods, models, and demonstrations.
This patent proposes a semantic parsing method that combines rules and learning-based approaches.
