2004 Volume 2 Pages 406-413
The falsification problem at a nuclear power plant exposed in 2002 involves various factors being related intricately with each other. In order to analyze such a social problem, it is crucial to visually explore the structure of the problem. In particular, it is very effective in the problem analysis to show the layered structures obtained by classifying and arranging factors as well as the causality relationships between them.
In this paper, we propose an information visualization technique which can be used to visualize these hierarchical causality relationships, and describe the outline of an up-to-date prototype system. Also, we illustrate the feasibility of the present technique with an application to the analysis of the falsification problem.
