A Centricity Study of the Interpersonal Node Space Relationship in SNS Community Based on the Graph Theory—Taken Sina Micro-Blog as an Example
以新浪微博用户为对象，用图论方法分析人际节点的度中心性、凝聚度等四个指标，发现主节点、次节点和边缘节点的差异分布及庇护属性导致的中心性变化。
This paper takes micro-blog users of the SNS personals community as objects and the graph theory method as Basics,and discusses the centricity characteristics of interpersonal node in SNS community through the node's four indexes.The four indexes are degree centrality,degree central potential,agglomeration and clustering coefficient.The paper summarizes the node number and the contact frequency between the interpersonal nodes in the selected five cases,and draws network relation diagrams,and then calculates the cases' four indexes and analyzes the centricity characteristics.The study findings are:1)The interpersonal node space relationship in SNS community presents the difference between the master node,the secondary node and the edge node,and the complex uneven distribution.The existence of Shelter property makes the edge point to contact the master node,and leads to the secondary node centrality reduction,network condensation degree increase.At the same time,the whole network relationship diagram exists multiple master nodes,the diversification trend of network nodes' interrelation is obvious.The coexistence characteristics of centrality and decenter are formed.2)The space relation of interpersonal nodes forms a new layer-group structure state in SNS community.The Group forms layers structure through the geopolitical relations.The geographical factors still play an important role within the certain scope.These is higher node density within the master node attract radius.Due to the influence of the different information chase psychology,Node connection outside attract radius makes a difference.In essence,SNS community is commonly affected byrelationshipandregional.The distance tobarrierfreestage of network structure is still far away in SNS community.