Zhongyu Ouyang

Ph.D. Student in Computer Science 💻

Recommender Systems; Preference Learning; Graph Learning

Dartmouth College 🌲

zhongyu.ouyang.gr [AT] dartmouth.edu

Biography

Hi 💚! I am a Ph.D. student in Computer Science at Dartmouth College, advised by Prof. Soroush Vosoughi. My research interests broadly lie in the application of recommender systems (e.g., graph-based collaborative filtering, click-through-rate prediction) and graph representation learning over various domains (e.g., healthcare, mobile application promotion). In summer 2024, I was fortunate to intern at Microsoft Bing Places as a data scientist intern.

Papers

Scaled Supervision is an Implicit Lipschitz Regularizer

Zhongyu Ouyang, Chunhui Zhang, Yaning Jia, Soroush Vosoughi

ICWSM'25: The 20th International AAAI Conference on Web and Social Media

How to Improve Representation Alignment and Uniformity in Graph-based Collaborative Filtering?

Zhongyu Ouyang, Chunhui Zhang, Shifu Hou, Chuxu Zhang, Yanfang Ye

ICWSM'24: The 18th International AAAI Conference on Web and Social Media

Symbolic Prompt Tuning Completes the App Promotion Graph

Zhongyu Ouyang, Shifu Hou, Shang Ma, Chaoran Chen, Chunhui Zhang, Toby Li, Xusheng Xiao, Chuxu Zhang, Yanfang Ye

ECML PKDD'24: European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases

Leveraging Graphs to Click-Through Rate Prediction through Test-Time Augmentation

Zhongyu Ouyang, Mingxuan Ju, Yanfang Ye

Under Review

On the Influence of Connectivity to CTR Prediction

Zhongyu Ouyang, Chunhui Zhang, Yaning Jia, Soroush Vosoughi

Under Review

From Thoughts to Tastes: Modeling Preference Hierarchies for Human-Aligned Sequential Recommendations

Qianlong Wen*, Zhongyu Ouyang*, Chunhui Zhang, Soroush Vosoughi, Yanfang Ye

Under Review, *Equal Contribution

Pretrained Image-Text Models are Secretly Video Captioners

Chunhui Zhang, Yiren Jian, Zhongyu Ouyang, Soroush Vosoughi

Annual Conference of the North American Chapter of the Association for Computational Linguistics (NAACL 2025) Main Conference

Working Memory Identifies Reasoning Limits in Language Models

Chunhui Zhang, Yiren Jian, Zhongyu Ouyang, Soroush Vosoughi

The Conference on Empirical Methods in Natural Language Processing (EMNLP 2024).

Disentangled dynamic heterogeneous graph learning for opioid overdose prediction

Qianlong Wen, Zhongyu Ouyang, Jianfei Zhang, Yiyue Qian, Yanfang Ye, Chuxu Zhang

KDD'22: SIGKDD Conference on Knowledge Discovery and Data Mining

When Sparsity Meets Contrastive Models: Less Graph Data Can Bring Better Class-Balanced Representations

Chunhui Zhang, Chao Huang, Yiyue Tian, Qianlong Wen, Zhongyu Ouyang, Youhuan Li, Yanfang Ye, Chuxu Zhang

ICML'23: International Conference on Machine Learning

Leveraging Graphs to Click-Through Rate Prediction through Test-Time Augmentation

Zhongyu Ouyang, Mingxuan Ju, Yanfang Ye

Under Review

On the Influence of Connectivity to CTR Prediction

Zhongyu Ouyang, Chunhui Zhang, Yaning Jia, Soroush Vosoughi

Under Review

From Thoughts to Tastes: Modeling Preference Hierarchies for Human-Aligned Sequential Recommendations

Qianlong Wen*, Zhongyu Ouyang*, Chunhui Zhang, Soroush Vosoughi, Yanfang Ye

Under Review, *Equal Contribution

Scaled Supervision is an Implicit Lipschitz Regularizer

Zhongyu Ouyang, Chunhui Zhang, Yaning Jia, Soroush Vosoughi

ICWSM'25: The 20th International AAAI Conference on Web and Social Media

How to Improve Representation Alignment and Uniformity in Graph-based Collaborative Filtering?

Zhongyu Ouyang, Chunhui Zhang, Shifu Hou, Chuxu Zhang, Yanfang Ye

ICWSM'24: The 18th International AAAI Conference on Web and Social Media

Symbolic Prompt Tuning Completes the App Promotion Graph

Zhongyu Ouyang, Shifu Hou, Shang Ma, Chaoran Chen, Chunhui Zhang, Toby Li, Xusheng Xiao, Chuxu Zhang, Yanfang Ye

ECML PKDD'24: European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases

Leveraging Graphs to Click-Through Rate Prediction through Test-Time Augmentation

Zhongyu Ouyang, Mingxuan Ju, Yanfang Ye

Under Review

On the Influence of Connectivity to CTR Prediction

Zhongyu Ouyang, Chunhui Zhang, Yaning Jia, Soroush Vosoughi

Under Review

From Thoughts to Tastes: Modeling Preference Hierarchies for Human-Aligned Sequential Recommendations

Qianlong Wen*, Zhongyu Ouyang*, Chunhui Zhang, Soroush Vosoughi, Yanfang Ye

Under Review, *Equal Contribution

Pretrained Image-Text Models are Secretly Video Captioners

Chunhui Zhang, Yiren Jian, Zhongyu Ouyang, Soroush Vosoughi

Annual Conference of the North American Chapter of the Association for Computational Linguistics (NAACL 2025) Main Conference

Working Memory Identifies Reasoning Limits in Language Models

Chunhui Zhang, Yiren Jian, Zhongyu Ouyang, Soroush Vosoughi

The Conference on Empirical Methods in Natural Language Processing (EMNLP 2024).

From Coarse to Fine: Enable Comprehensive Graph Self-supervised Learning with Multi-granular Semantic Ensemble

Qianlong Wen, Mingxuan Ju, Zhongyu Ouyang, Chuxu Zhang, Yanfang Ye

ICML'24: International Conference on Machine Learning

Disentangled dynamic heterogeneous graph learning for opioid overdose prediction

Qianlong Wen, Zhongyu Ouyang, Jianfei Zhang, Yiyue Qian, Yanfang Ye, Chuxu Zhang

KDD'22: SIGKDD Conference on Knowledge Discovery and Data Mining

Graph Contrastive Learning with cross-view Reconstruction

Qianlong Wen, Zhongyu Ouyang, Chunhui Zhang, Yiyue Qian, Chuxu Zhang

The 40th Conference on Uncertainty in Artificial Intelligence

When Sparsity Meets Contrastive Models: Less Graph Data Can Bring Better Class-Balanced Representations

Chunhui Zhang, Chao Huang, Yiyue Tian, Qianlong Wen, Zhongyu Ouyang, Youhuan Li, Yanfang Ye, Chuxu Zhang

ICML'23: International Conference on Machine Learning

YAGG: Ce transparent ceramics with high luminous efficiency for solid-state lighting application

Hui Hua, Shaowei Feng, Zhongyu Ouyang, Hezhu Shao, Haiming Qin, Hui Ding, Qiping Du, Zhijun Zhang, Jun Jiang, Haochuan Jiang

Journal of Advanced Ceramics (2019)

Vitæ

  • Dartmouth College Fall 2024 - Present
    Ph.D. Student in CS
    Recommender Systems; Preference Learning
  • Microsoft May 2024 - Aug 2024
    Data Scientist Intern
    Bing Places
  • University of Notre Dame Spring 2022 - Spring 2024
    Research Assistant in CS
    Recommender Systems
  • Case Western Reserve University Fall 2021
    Research Assistant
    Opioid overdose prediction over PDMP data
  • Qeexo June-Sep. 2020
    Machine Learning Engineer
    Backend support for Qeexo AutoML
  • Georgia Institute of Technology Jan. 2020 - Aug 2022
    M.S. Student
    Masters in Computer Science, minor in Machine Learning
  • AsiaInfo June-Aug 2019
    Data Scientist Intern
    Anomaly detection over health insurance claims
  • University of Pittsburgh Aug 2018 - Apr. 2020
    M.S. Student
    Masters in Industrial Engineering
  • Tianjin University 2014 - 2018
    B.S. Student
    Materials Forming & Control Engineering

Miscellaneous

Yaya I have a very sweet tuxedo cat named Yaya. He was born in Chirstmas 2021, and was adopted by me in March 2023. I named him Toothless (also Yaya, 'tooth' in Mandarin) after Toothless in How to Train Your Dragon, one of my favorite animations.

My favorite director is Tim Burton and I costumed myself Wednesday Adams this Halloween. My favorite artist is Taylor Swift, and I have been to her concerts in Shanghai (1989), Pittsburgh (Reputation), and Chicago (The Eras). I am also a fan of KPop. Shout out to New Jeans, Aespa, Twins, and other wonderful girl groups 📣!

Website Design

This website theme is designed by Prof. Martin Saveski (big gratitude!). The code needed to build the website is in this GitHub repo.