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Efficient Visual Navigation- A Study by the Example of Hierarchically Structured Graphs - Marcus Raitner

Name: Efficient Visual Navigation- A Study by the Example of Hierarchically Structured Graphs - Marcus Raitner
Brand: SIA OmniScriptum Publishing
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Visual navigation of hierarchically structured graphs is a technique for interactively exploring large graphs with an additional hierarchical structure such as call graphs of telephone networks. In order to reduce the complexity of the graph, only the interesting subgraphs are shown in detail, while the others are collapsed. As the areas of interest change over time, clusters are expanded or contracted, for which an efficient data structure is needed. In this work a new variant of this problem is introduced, which supports insertion and deletion of graph nodes. So far efficient data structures were known only for more static variants. The proposed data structure builds on a novel technique of superimposing a search tree over an ordered list maintenance structure. For visualizing the expanding and contracting a local update scheme for the well-known algorithm of Sugiyama and Misue is presented, which has applications ranging from UML diagrams to biochemical pathways. Experimental results show that this update scheme is more efficient than redrawing, yet the performance gain is not at the expense of quality as regards the area of the drawing and the number of crossings.

EAN: 9783836417945

Producent

SIA OmniScriptum Publishing

Kod produktu

787EUM03527KS

Autorzy

Marcus Raitner

Rok wydania

2007

Elementy

164

Oprawa

Miekka