摘要 Recent work has demonstrated that many 網絡s have b

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論文資訊

• 類型：已發表論文
• 日期：2003

摘要

Recent work has demonstrated that many 網絡s have broad distributions of vertex degree. Here we show that this has a substantial impact on the shape of ego-centered 網絡s and on concepts and methods based on ego-centered 網絡s, such as snowball sampling and the "ripple effect". In particular, we argue that one's acquaintances, one's immediate neighbors in the acquaintance 網絡, are far from being a random sample of the 族群, and that this biases the numbers of neighbors two and more steps away. We demonstrate this concept using data on academic collaboration 網絡s. (C) 2002 Elsevier Science B.V. All rights reserved.

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