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arXiv 1003.1260cs.DS
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清理间隔图

Cleaning Interval Graphs

Dániel Marx, Ildikó Schlotter

摘要:

我们研究了导出子图同构问题的一种特殊情况,其中两个输入图都是区间图。我们证明了该问题的NP-困难性,并证明了该问题在非标准参数化条件下的固定参数可处理性,其中参数为差分|V(G)|-|V(高)|,其中G和H分别是较大和较小的输入图。直观地说,我们可以将这个问题解释为“清理”图G,将其视为包含指示错误的额外顶点的模式,以获得表示原始模式的图H。我们还证明了标准参数化的W[1]-硬度,其中参数为|V(H)|.

英文摘要:

We investigate a special case of the Induced Subgraph Isomorphism problem, where both input graphs are interval graphs. We show the NP-hardness of this problem, and we prove fixed-parameter tractability of the problem with non-standard parameterization, where the parameter is the difference |V(G)|-|V(H)|, with G and H being the larger and the smaller input graph, respectively. Intuitively, we can interpret this problem as "cleaning" the graph G, regarded as a pattern containing extra vertices indicating errors, in order to obtain the graph H representing the original pattern. We also prove W[1]-hardness for the standard parameterization where the parameter is |V(H)|.

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