Abstract
The web-based visualization of large graph data is attracting much attention and brings new challenges to researchers, especially in visualization speed and data scale. Based on the idea of connected dominating set, we introduce the representative dominating sub graph (RDSG) to quickly simplify large graph, while still keeping the representative structure and features of the original graph for overview purpose. An interactive visualization architecture is implemented using AJAX,DWR and other web-related technologies. Only the simplified data is displayed in the client. Interaction with this data is implemented using the rich functionalities of plug-in, and remote interaction is realized using asynchronous graph data transfer between client and remote server. User can repeatedly expand the simplified graph directly from the web browser to find details of selected nodes from original graph. Our experiments show that this method is suitable for interactive visualization of popular networks, like bioinformatic network, social communication network and the internet, with up to tens of thousands of nodes, and even more nodes when multilevel simplification is used.
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