Ph.D. Graduate | Tsinghua University (THUIR lab) Algorithm Engineer @ ByteDance Supervised by Prof. Min Zhang.
My major research interests are about recommender system, user intent understanding, lifelogging, ubiquitous recommendation, and etc.
Education
| Year | Education |
|---|
| 08.2020-06.2025 | Ph.D. student, Department of Computer Science and Technology, Tsinghua University, China. |
| 09.2023-01.2024 | Visiting student, School of Computer Science and Engineering, Nanyang Technological University (NTU), Singapore. (Supervisor: Prof. Sun Aixin) |
| 09.2016-06.2020 | B.E., Department of Electronic Engineering, Tsinghua University, China. |
Experience
| Year | Experience |
|---|
| 06.2025-Present | TikTok E-Commerce, Algorithm Engineer. |
| 05.2024-10.2024 | TikTok E-Commerce, Internship. |
| 04.2022-01.2023 | Meituan, Internship. |
| 07.2019-09.2019 | Sogou. Inc, Internship. |
Publications
User Intents and Dynamic Context in Recommender Systems
| Intent-aware Ranking Ensemble for Personalized Recommendation |
|---|
| Jiayu Li, Peijie Sun, Zhefan Wang, Weizhi Ma, Yangkun Li, Min Zhang, Zhoutian Feng, Daiyue Xue. |
| SIGIR 2023 (Full paper).Online Version |
| A Situation-aware Enhancer for Personalized Recommendation |
|---|
| Jiayu Li, Peijie Sun, Chumeng Jiang, Weizhi Ma, Qingyao Ai, Min Zhang |
| DASFAA 2024 (Full paper).Preprint Version |
| Right Tool, Right Job: Recommendation for Repeat and Exploration Consumption in Food Delivery |
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| Jiayu Li, Aixin Sun, Weizhi Ma, Peijie Sun, Min Zhang |
| RecSys 2024 (Research Full paper).Online Version |
| Towards Ubiquitous Personalized Music Recommendation with Smart Bracelets |
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| Jiayu Li, Zhiyu He, Yumeng Cui, Chenyang Wang, Chong Chen, Chun Yu, Min Zhang, Yiqun Liu, Shaoping Ma. |
| IMWUT Vol 6, No 3 (Journal).Online Version |
| A Difficulty-Aware Framework for Churn Prediction and Intervention in Games |
|---|
| Jiayu Li, Hongyu Lu, Chenyang Wang, Weizhi Ma, Min Zhang, Xiangyu Zhao, Wei Qi, Yiqun Liu, Shaoping Ma. |
| KDD 2021 (Full paper).Online Version |
| SiTunes: A Situational Music Recommendation Dataset with Physiological and Psychological Signals |
|---|
| Vadim Grigorev,Jiayu Li, Weizhi Ma, Zhiyu He, Min Zhang, Yiqun Liu, Ming Yan, Ji Zhang |
| CHIIR 2024 (Resource paper).Online Version |
Recommender System Toolkit
| ReChorus2.0: A Modular and Task-Flexible Recommendation Library |
|---|
| Jiayu Li, Hanyu Li, Zhiyu He, Weizhi Ma, Peijie Sun, Min Zhang, Shaoping Ma |
| RecSys 2024 (Reproducibility long paper).Online Version; GitHub Repo |
| LifeRec: A Mobile App for Lifelog Recording and Ubiquitous Recommendation |
|---|
| Jiayu Li, Hantian Zhang, Zhiyu He, Rongwu Xu, Pingfei Wu, Min Zhang, Yiqun Liu, Shaoping Ma. |
| CHIIR 2022 (Demo paper).Online Version |
Interdisciplinary cooperation
| Estimating Rare Disease Incidences With Large-scale Internet Search Data: Development and Evaluation of a Two-step Machine Learning Method |
|---|
| Jiayu Li, Zhiyu He, Min Zhang, Weizhi Ma, Ye Jin, Lei Zhang, Shuyang Zhang, Yiqun Liu, Shaoping Ma. |
| JMIR Infodemiology (Vol 3, 2023) .Online Version |
| Factors influencing passage of time judgment in individuals’ daily lives: evidence from the experience sampling and diary methods |
|---|
| Yanci Liu, Siyu Ma,Jiayu Li, Xi Song, Feng Du, Meihong Zheng |
| Psychological Research (2023.07). |
| Epidemiological research on rare diseases using large-scale online search queries and reported case data |
|---|
| Lei Zhang, Ye Jin,Jiayu Li, Zhiyu He, Dingding Zhang, Min Zhang, Shuyang Zhang |
| Orphanet Journal of Rare Diseases (2023.08).Online Version |
Other Publications
| Evaluating Intelligence via Trial and Error |
|---|
| Jingtao Zhan, Jiahao Zhao,Jiayu Li, Yiqun Liu, Bo Zhang, Qingyao Ai, Jiaxin Mao, Hongning Wang, Min Zhang, Shaoping Ma |
| Arxiv 2025. Online Version |
| Short Video Segment-level User Dynamic Interests Modeling in Personalized Recommendation |
|---|
| Zhiyu He, Zhixin Ling,Jiayu Li, Zhiqiang Guo, Weizhi Ma, Xinchen Luo, Min Zhang, Guorui Zhou |
| SIGIR 2025 (Full paper). Preprint Version |
| Aiming at the Target: Filter Collaborative Information for Cross-Domain Recommendation |
|---|
| Hanyu Li, Weizhi Ma, Peijie Sun,Jiayu Li, Cunxiang Yin, Yancheng He, Guoqiang Xu, Min Zhang, Shaoping Ma |
| SIGIR 2024 (Full paper).Online Version |
| Understanding User Immersion in Online Short Video Interaction |
|---|
| Zhiyu He, Shaorun Zhang, Peijie Sun,Jiayu Li, Xiaohui Xie, Min Zhang, Yiqun Liu |
| CIKM 2023 (Full paper).Online Version |
| Make Fairness More Fair: Fair Item Utility Estimation and Exposure Re-Distribution |
|---|
| Jiayin Wang, Weizhi Ma,Jiayu Li, Hongyu Lu, Min Zhang, Biao Li, Yiqun Liu, Peng Jiang, Shaoping Ma. |
| KDD 2022 (Full paper).Online Version |
| THUIR-LL at the NTCIR-16 Lifelog-4 Task: Enhanced Interactive Lifelog Search Engine |
|---|
| Zhiyu He,Jiayu Li, Wenjing Wu, Min Zhang, Yiqun Liu, Shaoping Ma |
| NTCIR-16.Online Version |
| Know Yourself: Physical and Psychological Self-awareness with Lifelog |
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| Jiayu Li, Weizhi Ma, Min Zhang, Pengyu Wang, Yiqun Liu, Shaoping Ma. |
| Frontiers in Digital Health.Online Version |
| A multi-level interactive lifelog search engine with user feedback |
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| Jiayu Li, Min Zhang, Weizhi Ma, Yiqun Liu, Shaoping Ma. |
| LSC (challenge).Online Version |
| THUIR at the NTCIR-15 Micro-activity Retrieval Task |
|---|
| Jiayu Li, Ziyi Ye, Weizhi Ma, Min Zhang, Yiqun Liu, Shaoping Ma |
| NTCIR-15 (First place).Online Version |
Honor and Awards
| Year | Honor & Awards |
|---|
| 2023 | JiuKun Scholarship (First Prize), Tsinghua University. |
| 2021 | GuoQiang Scholarship, Tsinghua University. |
| 2020 | Excellent Graduate, Tsinghua University. |
