Structurizing public understanding on nuclear energy

Newspaper articles were analyzed to investigate the public understanding on nuclear energy utilization in Japan, which was structurized based on the graph theory and visualized with the digraph. The digraph is composed of 19 factors such as politics, economics, the environment, etc., and these are linked with each other by various causal relationships. The digraph may show what kind of issues such stakeholders face with each other as the people, the power company, and the government. Also, it may indicate that the most underlying factor in the causal relationships is the trust. (author)