Characterizing Cycle-Complete Dissimilarities in Terms of Associated Indexed 2-Hierarchies

Characterizing Cycle-Complete Dissimilarities in Terms of Associated Indexed 2-Hierarchies
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根据关联索引 2 层次结构描述循环完全差异

DOI:
10.1007/978-3-030-04651-4_43
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发表时间:
2018
期刊:
Lecture Notes in Computer Science
影响因子:
--
通讯作者:
Shoji Kazuya
Shoji Kazuya
中科院分区:
--
文献类型:
--
作者:
Ando Kazutoshi;Shoji Kazuya

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2-超度量是超度量的推广,并且已知在2-超度量集合和索引2-层次集合(其是索引层次的推广)之间存在一一对应关系。最近由Trudeau引入的圈完全不异集是超度量的推广,形成了2-超度量的一个子集,因此圈完全不异集对应于指标2-层次的一个子集。在这项研究中,我们将这个子集刻画为索引循环2-层次的集合,这反过来又允许我们刻画圈完全不同之处。此外,我们还给出了一个Otime算法,该算法在给定n阶的任意圈完全不同的情况下,找到相应的带指标的无圈2-族。
2-ultrametrics are a generalization of the ultrametrics and it is known that there is a one-to-one correspondence between the set of 2-ultrametrics and the set of indexed 2-hierarchies (which are a generalization of indexed hierarchies). Cycle-complete dissimilarities, recently introduced by Trudeau, are a generalization of ultrametrics and form a subset of the 2-ultrametrics; therefore the set of cycle-complete dissimilarities corresponds to a subset of the indexed 2-hierarchies. In this study, we characterize this subset as the set of indexedacyclic2-hierarchies, which in turn allows us to characterize the cycle-complete dissimilarities. In addition, we present an Otime algorithm that, given an arbitrary cycle-complete dissimilarities of ordern, finds the corresponding indexed acyclic 2-hierarchy.
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