portrait of faculty

Rui Guo , Ph.D.

portrait of faculty
School of Economics & Business Administration (SEBA) | Business Analytics
Office Location: Galileo Room 329

Professional Overview

Bio: Professor Rui Guo is an Assistant Professor of Business Analytics in the Business Analytics Department in the School of Economics and Business Administration at Saint Mary’s College of California. He received his PhD from the Gies College of Business at the University of Illinois at Urbana-Champaign. His research interests include data analytics, machine learning, deep learning, social media, information systems, and cloud computing. His research has appeared in Electronic Commerce Research and Journal of Product & Brand Management, among others. He is an Associate Editor for the Electronic Commerce Research journal.

Courses Taught: 

  • Business Statistics
  • Advanced Quantitative Analysis/Spreadsheet Modeling and Optimization including independent study
  • Programming for Analytics
  • Advanced Data Analytics
  • Programming for Business Analytics


  • Liao, J., Guo, R., Chen, J., Du, P. (2023). Avoidance or trash talk: The differential impact of brand identification and brand disidentification on oppositional brand loyalty. Journal of Product & Brand Management.
  • Guo, R., Tafti, A., Subramanyam, R. (2023). Internal IT Modularity, Firm Size, and Adoption of Cloud Computing. Electronic Commerce Research.
  • Guo, R. and Xu, K. (2022), A Large-Scale Analysis of COVID-19 Twitter Dataset in a New Phase of the Pandemic. In 2022 IEEE 12th International Conference on Electronics Information and Emergency Communication (ICEIEC) (pp. 276-281). IEEE.
  • Liao, J., Dong, X., Luo, Z., Guo, R. (2021). Oppositional loyalty as a brand identity-driven outcome: a conceptual framework and empirical evidence. Journal of Product & Brand Management, 30(8), 1134-1147.


  • PhD, Business Administration (Information Systems). Gies College of Business, University of Illinois at Urbana-Champaign, 2016.
  • MS, Technology Management. Gies College of Business, University of Illinois at Urbana-Champaign, 2010.
  • Master of Science by Research, Informatics. University of Edinburgh, 2004.
  • MS, Informatics (Software Engineering). University of Edinburgh, 2002.
  • BE, Computer Science. Huazhong University of Science and Technology, 2001.