Geumchul Um(엄금철)
Contact Detail
Associate Professor, Marketing, College of Business, Gachon University
Mailing Address: (13120) 1342 Seongnamdaero, Sujeong-gu, Seongnam-si, Gyeonggi-do, Korea
Email: yanjz at gachon.ac.kr
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Research Interests
Generative AI, Human-Machine interaction
Text-mining, Personal Recommendation System
Quant Marketing, Marketing Strategy, Consumer Decision-making
Selected Publications
Meng, Y., Park, S., & Um, G. (2026). How review sentiment influences ratings in Generative AI applications: Insights from VADER and LDA analysis. Journal of Retailing and Consumer Services, 88, 104560. https://doi.org/https://doi.org/10.1016/j.jretconser.2025.104560
Zhang, Y., Li, Q., & Yan, J.* (2025). Exploring multimodal factors in online reviews: A machine learning approach to evaluating content effectiveness. Journal of Retailing and Consumer Services, 84, 104261. https://doi.org/10.1016/j.jretconser.2025.104261
Li, Q., Zhang, Y., & Um, G.C.* (2025). Intertwining Artificial Intelligence and Efficiency: An Empirical Analysis of AI Focus and Operational Efficacy in Chinese Listed Firms. Finance Research Letters, 80, 107451. https://doi.org/10.1016/j.frl.2025.107451
Cai, N., Heo, J., & Yan, J.* (2025). Understanding consumer reactions to chatbot service failures: Evidence from a Wizard-of-Oz experiment. Acta Psychologica, 253, 104707. https://doi.org/10.1016/j.actpsy.2025.104707
Deng, Z., & Yan, J. (2025). The Effect of Perceived Warmth, Competence, and Social Presence of AI-Driven Chabots on Consumers’ Engagement and Satisfaction. SAGE Open, 15(3). https://doi.org/10.1177/21582440251365438
Zhang, K. & Yan, J. (2025). Understanding the effect of art infusion on product evaluation: the boundary condition of multiple art exposure. Humanities and Social Sciences Communications, 12, 1013. 10.1057/s41599-025-05380-z
Jeong, D., Kim, D., Yan, J.*, & Li. J. (2025). Effect of aspect-level emotion expression of online restaurant reviews on perceived helpfulness: An aspect-based sentiment analysis perspective, Sage Open, 15(2). https://doi.org/10.1177/21582440251337195
Zhang, Y., Yan, J.*, & Li, Q. (2025). From Text to Vision: Examining How Emotional Expression and Information Consistency Affect Perceived Helpfulness. IEEE Access, 13, 17246-17260. 10.1109/ACCESS.2024.3524467
Li, Q., Zhang, Y., & Yan, J.* (2025). ESG: Resource or Burden? Evidence from Chinese Listed Firms with Innovation Capability as the Mediating Mechanism. Systems, 13(9), 831. https://doi.org/10.3390/systems13090831
Cai, N., Gao, S., & Yan, J.* (2024). How the communication style of chatbots influences consumers’ satisfaction, trust, and engagement in the context of service failure. Humanities and Social Sciences Communications, 11(1), 687. https://doi.org/10.1057/s41599-024-03212-0
Xu, M., Liu, D., & Yan, J.* (2024). Effect of SNS addiction on prosocial behavior: mediation effect of fear of missing out. Frontiers in Psychology, 15, 1490188. https://doi.org/10.3389/fpsyg.2024.1490188
Feng, W., & Yan, J.* (2024). Language Abstraction in Negative Online Customer Reviews: The Choice of Corporate Response Strategy and Voice. Sage Open, 14(2), 1-21. https://doi.org/10.1177/21582440241240561
Li, H., & Yan, J.* (2024). Does Visual Review Content Enhance Review Helpfulness? A Text-Mining Approach. IEEE Access, 12, 27633-27647.
Li, Q., Zhang, Y., & Yan, J.* (2024). Exploring the Role of Top Management Team Diversity and Absorptive Capacity in the Relationship Between Corporate Environmental, Social, and Governance Performance and Firm Value. Systems, 12(11), 448. https://doi.org/10.3390/systems12110448
Yu, C., Yan, J.*, & Cai N. (2024). ChatGPT in Higher Education: Factors Influencing ChatGPT User Satisfaction and Continued Use Intention. Frontiers in Education, 9. https://10.3389/feduc.2024.1354929
Yu, C., Cai, N., Yan, J.*, & Zhou, Y. (2024). Consumers' Tolerance When Confronted with Different Service Types in Service Retailing. The Journal of Distribution Science, 22(2), 103-113, https://doi.org/10.15722/jds.22.02.202402.103
Kim, D., Jang, D., Yan, J.*, & Li, J. (2023). Developing a deep learning-based recommendation model using online reviews for predicting consumer preferences: Evidence from the restaurant industry. Journal of Intelligence and Information Systems, 29(4), 31–49.
Wang, H., & Yan, J.* (2022). Effects of social media tourism information quality on destination travel intention: Mediation effect of self-congruity and trust. Frontiers in Psychology, 13, 1049149.
Guo, Q., & Yan, J.* (2023). The Impact of Online Reviews on Hotel Ratings through the Lens of Elaboration Likelihood Model: A Text Mining Approach. KSII Transactions on Internet and Information Systems (TIIS), 17(10), 2609-2626.
Jeon, E., Nam, M., & Yan, J.* (2023). The effect of color lightness on nonheteronormative‐themed advertising evaluation. Social Science Quarterly, 104(4), 816-828.
Gao, S., & Yan, J. (2022). Verbal or Written? The Impact of Apology on the Repair of Trust: Based on Competence -vs. Integrity-Based Trust Violation. Frontiers in Psychology, 13, 884867.
Alumni and Current Ph.D. Student/Candidate
Yue Zhuo, University of Science and Technology Beijing, Beijing, China
Shuhong Gao, Changzhou Vocational Institute of Mechatronic Technology, Changzhou, China
Huaifeng Li, Changchun University of Finance And Economics, Changchun, China
Na Cai, Shandong Agriculture And Engineering University, Jinan, China
Chengcheng Yu, Donglin Liu, Yuhao Zhang
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