Network graph layout with a hierarchical optimization technique

Miyamura, Hiroko  ; Wu, H.-Y.*; Takahashi, Shigeo*; Ozahata, Satoshi*; Nakao, Akihiro*

In recent years, file-sharing applications have been widely used, and demand for analysis of the log data from the file-sharing process has increased. Visualization techniques are effective for the analysis of such log data. In this study, we propose a new network graph visualization technique with new node layout method for analyzing the file-sharing process using geographic information and the network hierarchical optimization. We applied the proposed technique to a log data of a file-sharing application.