SNA法

「The SNA method was created in 1954 by Barnes. It is an approach and set of techniques used to study the exchange of resources among groups, and it builds a network of nodes and analyzes the connections between them. The main idea is to analyze patterns of connections.」

◇SNA Approach for Analyzing the Research Trend of International Port Competition　https://www.sciencedirect.com/science/article/pii/S2092521216300475