Subway, Collaborative Matching, and Innovation

• 成果类型: Article
• 署名作者: Koh, Yumi; Li, Jing; Xu, Jianhuan
• 署名单位: University of Seoul; Singapore Management University
• 刊物名称: REVIEW OF ECONOMICS AND STATISTICS
• ISSN/ISSBN: 0034-6535
• DOI: 10.1162/rest_a_01279
• 发表日期: 2025-03
• 页码: 476-493
• 关键词: knowledge; transportation; agglomeration; spillovers; density

摘要

Using rapid expansion of the Beijing subway from 2000 to 2018, we analyze its impact on collaborative matches in innovations. We find that an hour reduction in travel time between a pair of locations in Beijing brought 14.85% to 37.69% increase in collaborated patents. Far-apart location pairs were more affected, and the local average causal response is approximately 34.92% to 82.29%. The effect is mainly driven by increased matches among highly productive innovators. The entry of new innovators, relocation of existing innovators, and collaborations among low-productive innovators also contribute to the increase in collaborative matches, especially in the long run.