On structural parameterizations of firefighting
On structural parameterizations of firefighting
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消防结构参数化研究
DOI:
10.1016/j.tcs.2019.02.032
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发表时间:
2019
影响因子:
1.1
通讯作者:
Yoshimura Shunya
中科院分区:
文献类型:
--
作者:
Das Bireswar;Enduri Murali Krishna;Kiyomi Masashi;Misra Neeldhara;Otachi Yota;Reddy I. Vinod;Yoshimura Shunya
The Firefighting problem is defined as follows. At time t= 0, a fire breaks out at a vertex of a graph. At each time step t≥ 1, a firefighter permanently defends (protects) an unburned vertex, and the fire then spreads to all undefended neighbors from the vertices on fire. This process stops when the fire cannot spread anymore. The goal is to find a sequence of vertices for the firefighter that maximizes the number of saved (non burned) vertices. The Firefighting problem turns out to be NP-hard even when restricted to bipartite graphs or trees of maximum degree three. We study the parameterized complexity of the Firefighting problem for various structural parameterizations. All our parameters measure the distance to a graph class (in terms of vertex deletion) on which the Firefighting problem admits a polynomial-time algorithm. To begin with, we show that the problem is W [1]-hard when parameterized by the size of a modulator to diameter at most two graphs and split graphs. In contrast to the above intractability results, we show that Firefighting is fixed parameter tractable (FPT) when parameterized by the size of a modulator to cographs, threshold graphs and disjoint unions of stars. We further investigate the kernelization complexity of the problem and show that it does not admit a polynomial kernel when parameterized by the size of a modulator to a disjoint union of stars under some complexity-theoretic assumptions.
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DOI:
10.46298/dmtcs.2136
发表时间:
2015
期刊:
Discret. Math. Theor. Comput. Sci.
影响因子:
--
作者:
R. Ganian
通讯作者:
R. Ganian
DOI:
10.1145/1435375.1435385
发表时间:
2005
期刊:
ACM Trans. Algorithms
影响因子:
--
作者:
Sang
通讯作者:
Sang
影响因子:
1.1
作者:
F. Fomin;P. Heggernes;E. J. V. Leeuwen
通讯作者:
E. J. V. Leeuwen
DOI:
--
发表时间:
2011
期刊:
arXiv.org
影响因子:
--
作者:
Ming Lam Leung
通讯作者:
Ming Lam Leung
影响因子:
0.8
作者:
V. Lozin;D. Rautenbach
通讯作者:
D. Rautenbach