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Interactive multigraph visualization and exploration with a two-phase strategy

Journal of Systems Engineering and Electronics 2014年第5期25卷 886-894页

作者： Huaquan Hu Lingda Wu Chao Yang Hanchen Song Science and Technology on Information Systems Engineering Laboratory National University of Defense Technology Equipment Academy

While it is very reasonable to use a multigraph consisting of multiple edges between vertices to represent various relationships, the multigraph has not drawn much attention in research. To visualize such a multigraph, a clear layout representing a global structure is of great importance, and interactive visual analysis which allows the multiple edges to be adjusted in appropriate ways for detailed presentation is also essential. A novel interactive two-phase approach to visualizing and exploring multigraph is proposed. The approach consists of two phases： the first phase improves the previous popular works on force-directed methods to produce a brief drawing for the aggregation graph of the input multigraph, while the second phase proposes two interactive strategies, the magnifier model and the thematic-oriented subgraph model. The former highlights the internal details of an aggregation edge which is selected interactively by user, and draws the details in a magnifying view by cubic Bezier curves; the latter highlights only the thematic subgraph consisting of the selected multiple edges that the user concerns. The efficiency of the proposed approach is demonstrated with a real-world multigraph dataset and how it is used effectively is discussed for various potential applications.

关键词： visual analytics information visualization multigraph visualization multiple edges aggregation graph magnifier model.

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