Optimal Matroid Partitioning Problems
Optimal Matroid Partitioning Problems
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DOI:
10.1007/s00453-021-00797-9
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发表时间:
2017-10
期刊:
影响因子:
1.1
通讯作者:
Yasushi Kawase;Kei Kimura;K. Makino;Hanna Sumita
中科院分区:
文献类型:
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作者:
Yasushi Kawase;Kei Kimura;K. Makino;Hanna Sumita
This paper studies optimal matroid partitioning problems for various objective functions. In the problem, we are givenkweighted-matroids on the same ground set. Our goal is to find a feasible partition that minimizes (maximizes) the value of an objective function. A typical objective is the maximum over all subsets of the total weights of the elements in a subset, which is extensively studied in the scheduling literature. Likewise, as an objective function, we handle the maximum/minimum/sum over all subsets of the maximum/minimum/total weight(s) of the elements in a subset. In this paper, we determine the computational complexity of the optimal partitioning problem with the above-described objective functions. Namely, for each objective function, we either provide a polynomial time algorithm or prove NP-hardness. We also discuss the approximability for the NP-hard cases.