期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：2018
卷号：115
期号：33
页码：8316-8321
DOI：10.1073/pnas.1719233115
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：The typical human personal social network contains about 150 relationships including kin, friends, and acquaintances, organized into a set of hierarchically inclusive layers of increasing size but decreasing emotional intensity. Data from a number of different sources reveal that these inclusive layers exhibit a constant scaling ratio of
关键词：quantitative sociology ; personal networks ; complex systems
