I am Xiaopeng Li, currently a Ph.D. student at the City University of Hong Kong, supervised by Prof.Xiangyu Zhao in AML Lab. Before that, I received M.S. and B.Eng degrees from Xi’an Jiaotong University in 2022 and 2019.
I am broadly interested in Data Mining and Machine Learning. My current research focuses on 1) LLMs for Information Retrieval, 2) LLMs for Recommender System.
Contact: xiaopli2-c@my.cityu.edu.hk
Selected Publications
G3: An Effective and Adaptive Framework for Worldwide Geolocalization Using Large Multi-Modality Models
Pengyue Jia, Yiding Liu, Xiaopeng Li, Xiangyu Zhao, Yuhao Wang, Yantong Du, Xiao Han, Xuetao Wei, Shuaiqiang Wang, Dawei Yin
NeurIPS’2024.
SyNeg: LLM-Driven Synthetic Hard-Negatives for Dense Retrieval
Xiaopeng Li, Xiangyang Li, Hao Zhang, Zhaocheng Du, Yichao Wang, Pengyue Jia, Xiangyu Zhao, Huifeng Guo, Ruiming Tang
Under Review.
Scenario-Wise Rec: A Multi-Scenario Recommendation Benchmark
Xiaopeng Li*, Jingtong Gao*, Pengyue Jia, Xiangyu Zhao, Yichao Wang, Wanyu Wang, Yuhao Wang, Yejing Wang, Huifeng Guo, Ruiming Tang
Under Review. [link]
HierRec: Scenario-Aware Hierarchical Modeling for Multi-scenario Recommendations
Jingtong Gao, Bo Chen, Menghui Zhu, Xiangyu Zhao, Xiaopeng Li, Yuhao Wang, Yichao Wang, Huifeng Guo, Ruiming Tang
CIKM’2024. [link]
D3: A Methodological Exploration of Domain Division, Modeling, and Balance in Multi-Domain Recommendations
Pengyue Jia, Yichao Wang, Xiangyu Zhao, Xiaopeng Li, Huifeng Guo, Ruiming Tang
AAAI’2024. [link]
MILL: Mutual Verification with Large Language Models for Zero-Shot Query Expansion
Pengyue Jia, Yiding Liu, Xiangyu Zhao, Xiaopeng Li, Changying Hao, Shuaiqiang Wang, Dawei Yin
NAACL’2024. [link]
Agent4Ranking: Semantic Robust Ranking via Personalized Query Rewriting Using Multi-agent LLM
Xiaopeng Li, Lixin Su, Pengyue Jia, Xiangyu Zhao, Suqi Cheng, Junfeng Wang, Dawei Yin
Arxiv’2023. [link]
HAMUR: Hyper Adapter for Multi-Domain Recommendation
Xiaopeng Li, Fan Yan, Xiangyu Zhao, Yichao Wang, Bo Chen, Huifeng Guo, Ruiming Tang
CIKM’2023. [link]
Work Experience
Research Intern - Baidu, Search Science Team
Research Intern - Huawei, Noah’s Ark Lab
Research Intern - Alibaba, Alibaba Cloud
SDE Intern - Huawei, Huawei Cloud
Service
Journal Reviewer:
ACM TIST, ACM TKDD, ACM TOIS, IEEE/ACM TASLP, ESWA
Conference PC Member/Reviewer:
2024: AAAI, IJCAI, KDD, CIKM, MM, ACL Rolling Reviewer
2025: KDD, ICASSP, ICLR
Conference Volunteer:
IJCAI’2023, WWW’2023
Awards
- 2nd place in Amazon KDD Cup 2024: Multi-Task Online Shopping Challenge for LLMs (2/502), all five tracks ranked in the top three, Best Student team in Track 1 and Track 5.
- Excellent Postgraduate Student, Xi’an Jiaotong University (2021)
- Outstanding Undergraduate Graduates, Xi’an Jiaotong University (2019)
News
[2024.09] Serve as the reviewer in ICLR’2025.
[2024.09] One paper is accepted in NeurIPS’2024.
[2024.08] Serve as the reviewer in ICASSP’2025.
[2024.08] Serve as the PC member in KDD’2025.
[2024.07] Our team AML_Lab@CityU won KDD CUP’2024 at 2nd place (2/502).
[2024.07] One paper accepted by CIKM’2024.
[2024.05] Accepted as reviewer of ACM Transactions on Intelligent Systems and Technology (ACM TIST).
[2024.04] Accepted as reviewer of IEEE/ACM Transactions on Audio, Speech and Language Processing (IEEE/ACM TASLP).
[2024.04] Serve as the PC member in MM’2024.
[2024.03] Serve as the PC member in CIKM’2024.
[2024.03] One paper accepted by NAACL’2024.
[2024.02] Serve as the PC member in KDD’2024.
[2024.02] Accepted as reviewer of ACM Transactions on Information Systems (ACM TOIS).
[2023.12] Serve as the PC member in IJCAI’2024.
[2023.12] One paper is accepted by AAAI’2024.
[2023.12] Accepted as reviewer of ACM Transactions on Knowledge Discovery from Data (ACM TKDD).
[2023.10] Accepted as reviewer of Expert Systems With Applications (ESWA).
[2023.08] I will serve as the PC member in AAAI’2024.
[2023.06] Serve as volunteer of IJCAI’2023.
[2023.06] One paper is accepted by CIKM’2023.
[2023.03] Serve as volunteer of WWW’2023.
[2023.01] Start my Ph.D. at CityU HK.