人类通信网络中的加权互易性
Weighted reciprocity in human communication networks
摘要：
在本文中，我们定义了一个度量的互惠性-在社会关系的平衡程度-适合加权社交网络，以调查这种二元特征的分布在一个大规模的系统，从跟踪日志超过10亿个手机通信事件在数百万的演员。我们发现，在这个网络中的二元关系的特点是更大程度的不平衡比我们预期的，如果人们只保持那些关系，表现出接近完全互惠。我们指出了人类沟通行为和关系形成的两个结构性特征--将接触分为强关系和弱关系，以及与类似他人形成关系的倾向--这要么有助于要么阻碍人们获得沟通平衡的能力。在他们的关系中。我们研究在何种程度上偏离所观察到的网络中的互惠性部分可追溯到这些特征。
英文摘要：
In this paper we define a metric for reciprocity---the degree of balance in a social relationship---appropriate for weighted social networks in order to investigate the distribution of this dyadic feature in a large-scale system built from trace-logs of over a billion cell-phone communication events across millions of actors. We find that dyadic relations in this network are characterized by much larger degrees of imbalance than we would expect if persons kept only those relationships that exhibited close to full reciprocity. We point to two structural features of human communication behavior and relationship formation---the division of contacts into strong and weak ties and the tendency to form relationships with similar others---that either help or hinder the ability of persons to obtain communicative balance in their relationships. We examine the extent to which deviations from reciprocity in the observed network are partially traceable to these characteristics.
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