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Abstract:
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We present several scalable, interactive visualization systems for large real-world tree and graph datasets. The multilevel TopoLayout framework provides high-quality layouts of a large class of graphs, decomposing the graph into pieces based on topological structure and using layout algorithms appropriate for each piece. The H3 system uses 3D hyperbolic geometry to show a large area of interest around a changeable focus point, handling quasi-hierarchical graphs of more than 300,000 nodes. The TreeJuxtaposer system provides side-by-side visual comparison of phylogenetic trees, handling more than 4 million nodes. It uses the Accordion Drawing visualization technique, which combines a stretch-and-shrink navigation metaphor with the guaranteed visibility of marked areas.
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