The temporal explorer who returns to the base
The temporal explorer who returns to the base
复制标题
返回基地的时空探索者
DOI:
10.1016/j.jcss.2021.04.001
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发表时间:
2021
影响因子:
1.1
通讯作者:
Akrida E
中科院分区:
文献类型:
--
作者:
Akrida E
We study here the problem of exploring a temporal graph when the underlying graph is a star. The aim of the exploration problem in a temporal star is finding a temporal walk which starts and finishes at the center of the star, and visits all leaves. We present a systematic study of the computational complexity of this problem, depending on the number k of time points where each edge can be present in the graph. We distinguish between the decision version StarExp (k), asking whether a complete exploration exists, and the maximization version MaxStarExp (k), asking for an exploration of the greatest possible number of edges. We fully characterize MaxStarExp (k) in terms of complexity. We also partially characterize StarExp (k), showing that it is in P for k< 4, but is NP-complete, for every k> 5. Finally, we partially characterize classes of “random” temporal stars which are, asymptotically almost surely, yes-instances and no-instances for StarExp (k).
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影响因子:
3.8
作者:
Akrida E
通讯作者:
Akrida E
DOI:
10.1145/3188745.3188824
发表时间:
2018
期刊:
--
影响因子:
--
作者:
Svensson O
通讯作者:
Svensson O
DOI:
--
发表时间:
2018
期刊:
arXiv.org
影响因子:
--
作者:
H. Bodlaender;Tom C. van der Zanden
通讯作者:
Tom C. van der Zanden
DOI:
10.1007/978-3-319-28472-9_11
发表时间:
2015-09
期刊:
--
影响因子:
--
作者:
Eleni C. Akrida;P. Spirakis
通讯作者:
Eleni C. Akrida;P. Spirakis
DOI:
--
发表时间:
2014
期刊:
Colloquium on Structural Information & Communication Complexity
影响因子:
--
作者:
D. Ilcinkas;R. Klasing;A. Wade
通讯作者:
A. Wade