中文摘要：

针对初始传播源之间的距离对于传播效果的影响问题,在两个真实的在线社会网络上实证研究了固定感染概率下,两个初始传播源同时传播时传播源距离对于传播效果的影响。通过实证分析,发现对于传播能力较弱的节点对,会存在一个最优传播距离,初始传播源间的距离小于最优距离时,距离越大传播效果越好,反之越差;对于传播能力较强的节点对,传播源之间的距离越大,传播效果越好。研究结果有助于增强对传播的理解,找到更好的传播策略。

英文摘要：

For the influence of the distance among multiple initial spreaders on the spreading effects, this paper investigated the effects of the distance between two initial spreaders on two real networks under fixed infection probability. Results show that for the spreaders whose spreading ability is low, the spreading efficiency will increase when the distance less than a certain value, or otherwise decrease. However, the spreading will be more effective when the distance between the two spreaders whose spreading ability is high increases. This work may give new insights to explore spreading and find better strategy for spreading.