Inserting Multiple Edges into a Planar Graph
Inserting Multiple Edges into a Planar Graph
复制标题
将多条边插入平面图
DOI:
10.4230/lipics.socg.2016.30
复制
发表时间:
2015
期刊:
影响因子:
--
通讯作者:
Petr Hliněný
中科院分区:
文献类型:
--
作者:
Markus Chimani;Petr Hliněný
Let $G$ be a connected planar (but not yet embedded) graph and $F$ a set of additional edges not yet in $G$. The {multiple edge insertion} problem (MEI) asks for a drawing of $G+F$ with the minimum number of pairwise edge crossings, such that the subdrawing of $G$ is plane. An optimal solution to this problem approximates the crossing number of the graph $G+F$.
Finding an exact solution to MEI is NP-hard for general $F$, but linear time solvable for the special case of $|F|=1$ (SODA01, Algorithmica) or when all of $F$ are incident to a new vertex (SODA09).
The complexity for general $F$ but with constant $k=|F|$ was open, but algorithms both with relative and absolute approximation guarantees have been presented (SODA11, ICALP11). We show that the problem is fixed parameter tractable (FPT) in $k$ for biconnected $G$, or if the cut vertices of $G$ have degrees bounded by a constant. We give the first exact algorithm for this problem; it requires only $O(|V(G)|)$ time for any constant $k$.
影响因子:
1
作者:
M. Chimani;P. Hlinĕný
通讯作者:
P. Hlinĕný
DOI:
10.1016/j.ejc.2011.09.009
发表时间:
2012
期刊:
Eur. J. Comb.
影响因子:
--
作者:
Markus Chimani;Petr Hliněný;Petra Mutzel
通讯作者:
Petra Mutzel