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原文連結
論文資訊
- 類型：已發表論文
- 日期：2014-07-02
摘要
The size of cities is known to play a fundamental role in 社會 and 經濟 life. Yet, its relation to the structure of the underlying 網絡 of human interactions has not been investigated empirically in detail. In this paper, we map society-wide communication 網絡s to the 城市 areas of two European countries. We show that both the total number of contacts and the total communication activity grow superlinearly with city 族群 size, according to well-defined 縮放律 relations and resulting from a multiplicative increase that affects most citizens. Perhaps surprisingly, however, the probability that an individual's contacts are also connected with each other remains largely unaffected. These empirical results predict a systematic and scale-invariant acceleration of interaction-based spreading phenomena as cities
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