From Few Components to an Eulerian Graph by Adding Arcs
From Few Components to an Eulerian Graph by Adding Arcs
复制标题
通过添加弧从少量组件到欧拉图
DOI:
10.1007/978-3-642-25870-1_28
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
Mathias Weller
中科院分区:
文献类型:
--
作者:
Manuel Sorge;René van Bevern;R. Niedermeier;Mathias Weller
Eulerian Extension (EE) is the problem to make an arc-weighted directed multigraph Eulerian by adding arcs of minimum total cost. EE is NP-hard and has been shown fixed-parameter tractable with respect to the number of arc additions. Complementing this result, on the way to answering an open question, we show that EE is fixed-parameter tractable with respect to the combined parameter "number of connected components in the underlying undirected multigraph" and "sum of indeg(v) - outdeg(v) over all vertices v in the input multigraph where this value is positive." Moreover, we show that EE is unlikely to admit a polynomial-size problem kernel for this parameter combination and for the parameter "number of arc additions".
影响因子:
2
作者:
W. Höhn;T. Jacobs;N. Megow.
通讯作者:
N. Megow.