摘要 Email graphs have been used to illustrate the gen

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論文資訊

• 類型：已發表論文
• 日期：2009

摘要

Email graphs have been used to illustrate the general properties of 社會 網絡s of communication and collaboration. However, increasingly, the majority of Internet traffic reflects opportunistic rather than symbiotic 社會 relations. Here we use email data drawn from a large university to construct directed graphs of email exchange that quantify the differences between 社會 and opportunistic behavior, represented by legitimate messages and spam, respectively. We show that while structural characteristics typical of other 社會 網絡s are shared to a large extent by the legitimate component, they are not characteristic of opportunistic traffic. To complement the graph analysis, which suffers from incomplete knowledge of users external to the domain, we study temporal patterns of communication to show dynam

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