Greetings! I am Tianyi (Billy) Ma (马天翊), a Ph.D. Student in Computer Science and Engineering at the University of Notre Dame, supervised by Prof. Yanfang (Fanny) Ye. Under Prof. Ye’s supervision, I collaborate with my lab mates and Prof. Chuxu Zhang. Before that, I obtained my M.S. degree from the University of Southern California and my B.S. degree from the University of Colorado Boulder.

My research fields fail in graph/hypergraph Learning and its application with Large Language models. Specifically, I am interested in hypergraph representation learning and contrastive learning. I am eager to collaborate with fellow researchers. Please feel free to contact me via the email provided below to discuss details.

News

• [2025.02] One paper is accepted by NAACL’25.
• [2024.11] One paper is accepted by KDD’25.
• [2024.10] One paper is accepted by WSDM’25.
• [2024.08] I will join Amazon for a research internship during this fall.
• [2024.04] I will serve as a PC member for CIKM’24.

Preprints

• Adaptive Expansion for Hypergraph Learning [paper] [code]

  Tianyi Ma, Yiyue Qian, Shinan Zhang, Chuxu Zhang, Yanfang, Ye.

• LLM-Empowered Class Imbalanced Graph Prompt Learning for Online Drug Trafficking Detection [paper] [code]

  Tianyi Ma, Yiyue Qian, Zehong Wang, Zheyuan Zhang, Chuxu Zhang, Yanfang, Ye.

Selected Publications

• Adaptive Graph Enhancement for Imbalanced Multi-relation Graph Learning

  Tianyi Ma, Yiyue Qian, Chuxu Zhang, Yanfang, Ye. (co-first author)

  [WSDM’25] ACM International Conference on Web Search and Data Mining

• Can LLMs Convert Graphs to Text-Attributed Graphs?

  Zehong Wang, Sidney Liu, Zheyuan Zhang, Tianyi Ma, Chuxu Zhang, Yanfang Ye

  [NAACL’25] The 2025 Conference of the North American Chapter of the Association for Computational Linguistics

• MOPI-HFRS: A Multi-objective Personalized Health-aware Food Recommendation System with LLM-enhanced Interpretation.

  Zheyuan Zhang, Zehong Wang, Tianyi Ma, Varun Sameer Taneja, Sofia Nelson, Nhi Ha Lan Le, Keerthiram Murugesan, Mingxuan Ju, Nitesh V Chawla, Chuxu Zhang, Yanfang Ye.

  [KDD’25] The ACM SIGKDD Conference on Knowledge Discovery and Data Mining

• Dual-level Hypergraph Contrastive Learning with Adaptive Temperature Enhancement

  Yiyue Qian, Tianyi Ma, Chuxu Zhang, Yanfang, Ye.

  [WWW’24] The World Wide Web Conference

• Hypergraph Contrastive Learning for Drug Trafficking Community Detection

  Tianyi Ma, Yiyue Qian, Chuxu Zhang, Yanfang, Ye.

  [ICDM’23] The International Conference on Data Mining

Contact

• Email: tma2[at]nd[dot]edu
• Office: 247 Fitzpatrick Hall of Engineering