人在社交网络中的投资行为研究

以二元关系为基础的社交网络对于理解人的社会性非常重要，人们在社交关系上的投资模式很大程度上决定了社交网络的稳定性，而通讯是反映人与人之间情感交流的典型行为之一。本文通过中国某地区的通讯数据研究人们在构建和维系社会关系中的资源投入和分配行为，提出了一个基于熵的衡量人们资源分配均匀性的指标。并利用该指标对不同年龄、性别的手机用户进行通话行为分析，发现男性、女性处于不同的年龄阶段时，在社交网络中资源的投入和分配有着明显的差异。

Study on the Pattern of People's Investment Behavior Based on Mobile Phone Data

Social networks based on binary relationships are very important for understanding people's sociality. People's social relationships largely determine the stability of social networks among which mobile communication is one of the typical way reflecting people's emotional connection. In this paper, we used a large mobile phone dataset from an area of China to study that how people build and maintain social relationships. To measure the uniformity of human emotional behavior, an entropy-based index is proposed and used to analyze the mobile phone data. The results reveals that there are obvious sex and age differences that people invest and assign their resources in social networks.