Crossing minimization in extended level drawings of graphs
Crossing minimization in extended level drawings of graphs
复制标题
扩展级图形绘图中的交叉最小化
DOI:
10.1016/j.dam.2009.09.002
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发表时间:
2010
期刊:
影响因子:
--
通讯作者:
S.-H. Hong
中科院分区:
文献类型:
--
作者:
C. Bachmaier;H. Buchner;M. Forster;S.-H. Hong
The most popular method of drawing directed graphs is to place vertices on a set of horizontal or concentric levels, known as level drawings. Level drawings are well studied in Graph Drawing due to their strong application for the visualization of hierarchy in graphs. There are two drawing conventions: Horizontal drawings use a set of parallel lines and radial drawings use a set of concentric circles. In level drawings, edges are only allowed between vertices on different levels. However, many real world graphs exhibit hierarchies with edges between vertices on the same level. In this paper, we initiate the new problem of extended level drawings of graphs, which was addressed as one of the open problems in social network visualization, in particular, displaying centrality values of actors. More specifically, we study minimizing the number of edge crossings in extended level drawings of graphs. The main problem can be formulated as the extended one-sided crossing minimization problem between two adjacent levels, as it is folklore with the one-sided crossing minimization problem in horizontal drawings. We first show that the extended one-sided crossing minimization problem is NP-hard for both horizontal and radial drawings, and then present efficient heuristics for minimizing edge crossings in extended level drawings. Our extensive experimental results show that our new methods reduce up to 30% of edge crossings.
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DOI:
--
发表时间:
2008
期刊:
Latin American Symposium on Theoretical Informatics
影响因子:
--
作者:
Seok;H. Nagamochi
通讯作者:
H. Nagamochi
DOI:
--
发表时间:
2008
期刊:
Graph Drawing with Applications to Bioinformatics and Social Sciences
影响因子:
--
作者:
S. Borgatti;S. Kobourov;O. Kohlbacher;Petra Mutzel
通讯作者:
Petra Mutzel
DOI:
--
发表时间:
--
期刊:
Discrete and Computational Geometry (発行予定)
影响因子:
--
作者:
L.Zhao;H.Nagamochi;T.Ibaraki;H.Nagamochi;H.Nagamochi
通讯作者:
H.Nagamochi
DOI:
--
发表时间:
1996
期刊:
影响因子:
--
作者:
V. Valls;R. Martí;P. Lino
通讯作者:
P. Lino