Approximation algorithms for constructing required subgraphs using stock pieces of fixed length
Approximation algorithms for constructing required subgraphs using stock pieces of fixed length
复制标题
使用固定长度的库存片段构造所需子图的近似算法
DOI:
10.1007/s10878-020-00543-x
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发表时间:
2020-02
影响因子:
1
通讯作者:
Xingxing Yu
中科院分区:
文献类型:
--
作者:
Junran Lichen;Jianping Li;Ko-Wei Lih;Xingxing Yu
In this paper, we address the problem of constructing required subgraphs using stock pieces of fixed length (CRS-SPFL, for short), which is a new variant of the minimum-cost edge-weighted subgraph (MCEWS, for short) problem. Concretely, for the MCEWS problemQ, it is asked to choose a minimum-cost subset of edges from a given graphGsuch that these edges can form a required subgraph. For the CRS-SPFL problem, these edges in such a required subgraphare further asked to be constructed by plus using some stock pieces of fixed lengthL. The new objective, however, is to minimize the total cost to construct such a required subgraph, where the total cost is sum of the cost to purchase stock pieces of fixed lengthLand the cost to construct all edges in such a subgraph. We obtain the following three main results. (1) Given an-approximation algorithm to solve the MCEWS problem, where(for the case, the MCEWS problemQis solved optimally by a polynomial-time exact algorithm), we design a-approximation algorithm and another asymptotic-approximation algorithm to solve the CRS-SPFL problem, respectively; (2) WhenQis the minimum spanning tree problem, we provide a-approximation algorithm and an AFPTAS to solve the problemof constructing a spanning tree using stock pieces of fixed lengthL, respectively; (3) WhenQis the single-source shortest paths tree problem, we present a-approximation algorithm and an AFPTAS to solve the problemof constructing a single-source shortest paths tree using stock pieces of fixed lengthL, respectively.
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DOI:
10.1007/978-0-387-30162-4_28
发表时间:
2021-08
期刊:
Proceedings of the 1997 International Symposium on Parallel Architectures, Algorithms and Networks (I-SPAN'97)
影响因子:
--
作者:
通讯作者:
--
影响因子:
1.8
作者:
Donghui Chen;D. Du;Xiaodong Hu;Guohui Lin;Lusheng Wang;G. Xue
通讯作者:
Donghui Chen;D. Du;Xiaodong Hu;Guohui Lin;Lusheng Wang;G. Xue
影响因子:
1.1
作者:
J. Remy;A. Steger
通讯作者:
J. Remy;A. Steger
DOI:
10.1007/springerreference_6200
发表时间:
2012-04
期刊:
--
影响因子:
--
作者:
F. Hwang;D. Richards;P. Winter
通讯作者:
F. Hwang;D. Richards;P. Winter
DOI:
10.1109/infcom.1997.635138
发表时间:
1997-04
期刊:
Proceedings of INFOCOM '97
影响因子:
--
作者:
B. Ramamurthy;Jason Iness;B. Mukherjee
通讯作者:
B. Ramamurthy;Jason Iness;B. Mukherjee