Interactive Analysis of Relational Information

In this paper we promote an interactive analysis of graphs, which represent networks of entities. While the initial graph uses the traditional force-directed placement methods, we consider three complementary tools that can help a user when trying to extract sub-structures or understand better the graph structure. These tools are to be used interactively by the user. We show that different structures can lead to different interpretation of the role of the nodes in the graph. We insist on the interactive character of the exploratory process.