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/10.1177/2158244025136543
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
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
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