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arXiv math/0603116math.CO
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由三元组序信息重构度量树是NP完备的

Reconstructing Metric Trees from Order Information on Triples is NP Complete

Eric Babson

摘要:

我们证明了从三元组的顺序信息重建一棵树是NP难的。这与超度量和四元组上的子树信息的情况相反,这两者都已知允许多项式时间重构。

英文摘要:

We show that reconstructing a tree from order information on triples is NP-hard. This is in contrast to the case for ultra-metrics and for subtree information on quadruples which are both known to allow polynomial time reconstruction.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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