“社会调查与应用”系列讲座第55期

主题：High-Frequency Social Media Data: User Location Labels and Their Impact on Online Community

主讲人：杨阳，香港浸会大学

时间：2025年10月22号10:00-11:30

讲座地点：暨南大学石牌校区曾宪梓科学馆406会议室

主办方：暨南大学社会调查中心

主讲人简介：

杨阳，香港浸会大学商学院会计、经济与金融学系研究助理教授，加州大学圣迭戈分校计算社会科学博士，主要研究领域包括媒体经济学、劳动经济学与教育经济学。曾任斯坦福大学中国经济与制度研究中心(SCCEI) 博士后研究员，现为加州大学全球冲突与合作研究所 (IGCC) 研究员。其研究成果发表于 Journal of Comparative Economics、Pacific Basin Finance Journal、Political Science Research and Methods、《经济学 (季刊)》、《世界经济》等期刊。

讲座概述：

Using a high-frequency social media dataset of comments and replies under verified accounts, we evaluate how the rollout of user location labels reshaped interaction patterns. Leveraging an interrupted time series design, we find stable overall participation around the rollout, alongside a measurable geographic reallocation of attention: within-province interactions increased, while cross-province engagement on location-specific topics declined. Reply-level evidence indicates more clustered, location-salient response threads after the rollout, raising the interaction cost for cross-provincial comments. These patterns reflect a spatial reorganization of discussion networks rather than a generalized drop in activity, offering data-driven evidence on how identity/location disclosure tools can alter community structure and information flow.