Weihang Su

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Department of Computer Science and Technology, Tsinghua University

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About me

Welcome to my homepage! I am Weihang Su (苏炜航), a second-year PhD student at the Department of Computer Science and Technology, Tsinghua University, under the supervision of Prof. Yiqun Liu.

My research focuses on leveraging AI technology to better meet user’s information needs, specifically in the following areas:

I am currently exploring an interesting direction: Parametric Retrieval-Augmented Generation (Parametric RAG). We propose a new RAG paradigm that directly injects external knowledge into the parameters of large language models (LLMs) rather than relying on traditional in-context knowledge injection that appends retrieved documents to the LLM’s input. By parameterizing documents and integrating them into the model during the inference stage, Parametric RAG improves the overall performance of the RAG system and online efficiency while maintaining flexibility. Feel free to check out the preprint version of our paper: Parametric Retrieval-Augmented Generation.

I am also passionate about mentoring undergraduate students in research. I’ve collaborated with undergraduate students like Changyue Wang, Yichen Tang, and Anzhe Xie, co-authoring high-quality papers at top-tier conferences such as ACL, EMNLP, TOIS, SIGIR-AP, etc.

If you are an undergraduate interested in my research areas and aim to publish high-quality papers, you can apply for an internship with the THUIR group through official channels or contact me directly to embark on meaningful research together!

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Selected Awards

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Link to Google Scholar

The titles of my first-author papers are in bold (excluding co-first where the ranking is not first).

Paper Under Submission

Year 2025

Year 2024

Year 2023

Year 2022

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