文章基本信息

标题：Quantifying Spillovers in Open Source Content Production: Evidence from Wikipedia
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作者：Aleksi Aaltonen ; Stephan Seiler
期刊名称：CEP Discussion Paper
出版年度：2014
卷号：2014
语种：English
出版社：Centre for Economic Performance
摘要：Using detailed edit-level data over eight years across a large number of articles on Wikipedia, we find evidence for a positive spillover effect in editing activity. Cumulative past contributions, embodied by the current article length, lead to significantly more editing activity, while controlling for a host of factors such as popularity of the topic and platform-level growth trends. The magnitude of the externality is significant, and growth in editing activity on the average article would have been about 50% lower in its absence. The spillover operates through an increase in the number of contributing users, whereas the length of contributions remains unchanged. Edits triggered by spillovers involve only marginally more deletion and replacement of content than the average edit, suggesting that past contributions do inspire the creation of new content rather than corrections of past mistakes. Roughly 75% of the spillover is due to new rather than returning users contributing content.
关键词：Wikipedia;open source;user-generated content;knowledge spillover;cumulative knowledge