Social network analysis usually constructs a network through nodes (individuals or organizations) and edges (their connections or relationships). These nodes and edges can represent people's socialization, cooperation between organizations or any other form of connection. Social network analysis can be used to identify the center and important people in the group, predict the spread of information, and diagnose the weakness and loss of the network.
In a word, social network analysis is a method to study individuals and society from the perspective of relationship and network, which helps us to understand the mechanism behind human behavior and social phenomena.