中文摘要：

推手节点对社交网络信息传播有非常重要的作用。在传统SIR模型中引入“推手节点”概念，研究该类节点所造成的热门话题在网络中的传播规律，以及对社交网络信息传播的影响和控制。利用YouTube数据构建社交网络拓扑结构，实验发现，当节点传播概率大于0.7时，可设置为推手节点，对于信息传播抑制可采用目标免疫算法。而在一个社交网络中传播节点的整体信息免疫大于0.2时能有效抑制信息传播，该值为使用重要熟人免疫策略对信息传播进行抑制的参数值。

英文摘要：

Pushing hands node plays a very important role in social networks information dissemination.We introduced the“pushing hands node”concept into traditional SIR model,studied the dissemination law of the hot topics caused by such kind of nodes in networks and their influence and control on social network information dissemination.Using YouTube data to build a social network topology,we found in experiment that when the node dissemination probability was greater than 0.7,it could be set as the pushing hands node,and that the target immune algorithm could be used for restraining information dissemination.While the entire information immunisation of the dissemination node in social networks was greater than 0.2,it could effectively inhibit the information dissemination.This value is the parameter value of the important acquaintance immunisation strategy used to suppress the information dissemination.