嘉　宾：Chee-Wee Tan  教授  香港理工大学

主持人：宋婷婷  副教授  上海交通大学安泰经济与管理学院

时　间：2025年3月24日（周一）14:00-15:30

地　点：上海交通大学徐汇校区 浩然楼204

内容简介:

Online communities often benefit from subgroups whose specialized expertise boosts overall engagement. However, when these subgroups become highly self-sufficient ’tribes‘, they may limit cooperation beyond tribal boundaries. Drawing on Social Network Theory (SNT), we strive to elucidate the effects of tribal density (the intensity of internal interactions) and tribal transitivity (the tendency for triads to form closely knit sub-clusters) on both in-tribe and out-tribe assistive behaviors. By analyzing data from a large trucker-focused Q&A platform, we find that rising density initially fuels rapid and plentiful in-tribe assistance but exhibits an inverted U-shaped relationship with out-tribe assistance as exclusivity sets in. Conversely, transitivity reduces in-tribe assistance by creating fragmented pockets, yet at very high levels can paradoxically spark renewed external engagement. Additionally, strategically deployed platform actions, such as award programs, moderate these impacts by weakening the adverse effects of excessive self-sufficiency. These findings underscore the nuanced dynamics of tribalism in knowledge-sharing environments, offering actionable insights for platform designers seeking to maintain both cohesive subgroup identities and broader community vitality.

演讲人简介：

Chee-Wee Tan is a Professor at the Department of Management and Marketing in the Hong Kong Polytechnic University (PolyU). Before joining PolyU, Chee-Wee is a Professor w/ Special Responsibilities in Research Excellence at Copenhagen Business School (CBS). Chee-Wee received his PhD in Management Information Systems from the University of British Columbia. His research interests focus on design and innovation issues related to digital platforms. His work has been published in leading peer-reviewed journals such as Information Systems Research (ISR), Journal of Operations Management (JOM), MIS Quarterly (MISQ), Journal of Management Information Systems (JMIS), Journal of the Association for Information Systems (JAIS), European Journal of Information Systems (EJIS), and Decision Support Systems (DSS), among others. Chee-Wee is holding or has held Honorary and Guest Professorship positions at Lingnan University (LNU), Monash University Malaysia (MUM), the University of New South Wales (UNSW), the University of Nottingham Ningbo China (UNNC), the University of Science and Technology of China (USTC), and the Weizenbaum Institute for the Networked Society. Additionally, Chee-Wee has served or is currently serving on the editorial boards for ACM Distributed Ledger Technologies: Research and Practice (DLT), DSS, EJIS, Industrial Management & Data Systems (IMDS), IEEE Transactions on Engineering Management (IEEE-TEM), Information & Management (I&M), Information Systems Journal (ISJ), Internet Research (IntR), Journal for the Association of Information Systems (JAIS), Journal of Computer Information Systems (JCIS), Journal of Management Analytics (JMA), Journal of Management Information Systems (JMIS), and MISQ. Finally, Chee-Wee is the Vice President of Publications for the Association for Information Systems.

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