Exact Algorithms for Finding Longest Cycles in Claw-Free Graphs
Exact Algorithms for Finding Longest Cycles in Claw-Free Graphs
复制标题
在无爪图中查找最长周期的精确算法
DOI:
10.1007/s00453-011-9576-4
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发表时间:
2011
期刊:
影响因子:
1.1
通讯作者:
Broersma H
中科院分区:
文献类型:
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作者:
Broersma H
TheHamiltonian Cycleproblem is the problem of deciding whether ann-vertex graphGhas a cycle passing through all vertices ofG. This problem is a classicNP-complete problem. Finding an exact algorithm that solves it intime for some constantα<2 was a notorious open problem until very recently, when Björklund presented a randomized algorithm that usestime and polynomial space. TheLongest Cycleproblem, in which the task is to find a cycle of maximum length, is a natural generalization of theHamiltonian Cycleproblem. For a claw-free graphG, finding a longest cycle is equivalent to finding a closed trail (i.e., a connected even subgraph, possibly consisting of a single vertex) that dominates the largest number of edges of some associated graphH. Using this translation we obtain two deterministic algorithms that solve theLongest Cycleproblem, and consequently theHamiltonian Cycleproblem, for claw-free graphs: one algorithm that usestime and exponential space, and one algorithm that usestime and polynomial space.
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DOI:
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发表时间:
2008
期刊:
J. Discrete Algorithms
影响因子:
--
作者:
H. Broersma;D. Paulusma
通讯作者:
D. Paulusma
DOI:
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发表时间:
1977
期刊:
ACM Annual Conference
影响因子:
--
作者:
S. Kohn;A. Gottlieb;M. Kohn
通讯作者:
M. Kohn
DOI:
10.1016/0167-6377(82)90044-x
发表时间:
1982-04
期刊:
Oper. Res. Lett.
影响因子:
--
作者:
R. Karp
通讯作者:
R. Karp
DOI:
--
发表时间:
2009
期刊:
International Workshop on Graph-Theoretic Concepts in Computer Science
影响因子:
--
作者:
H. Broersma;F. Fomin;P. Hof;D. Paulusma
通讯作者:
D. Paulusma
影响因子:
1.1
作者:
Zbigniew Lonc
通讯作者:
Zbigniew Lonc