Parameterized Algorithms for Stochastic Steiner Tree Problems
Parameterized Algorithms for Stochastic Steiner Tree Problems
复制标题
随机斯坦纳树问题的参数化算法
DOI:
10.1007/978-3-642-36046-6_14
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
B. Zev
中科院分区:
文献类型:
--
作者:
D. Kurz;P. Mutzel;B. Zev
We consider the Steiner tree problem in graphs under uncertainty, the so-called two-stage stochastic Steiner tree problem (SSTP). The problem consists of two stages: In the first stage, we do not know which nodes need to be connected. Instead, we know costs at which we may buy edges, and a set of possible scenarios one of which will arise in the second stage. Each scenario consists of its own terminal set, a probability, and second-stage edge costs. We want to find a selection of first-stage edges and second-stage edges for each scenario that minimizes the expected costs and satisfies all connectivity requirements. We show that SSTP is in the class of fixed-parameter tractable problems (FPT), parameterized by the number of terminals. Additionally, we transfer our results to the directed and the prize-collecting variant of SSTP.
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DOI:
10.1007/978-3-642-25011-8_30
发表时间:
2011-07
期刊:
--
影响因子:
--
作者:
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通讯作者:
Markus Chimani;Petra Mutzel;Bernd Zey
DOI:
--
发表时间:
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期刊:
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影响因子:
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作者:
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DOI:
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发表时间:
2010
期刊:
SIAM J. Comput.
影响因子:
--
作者:
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通讯作者:
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影响因子:
2.7
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影响因子:
--
作者:
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通讯作者:
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