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Biologically Inspired Phylogenetic Models Strongly Outperform the No Common Mechanism Model

机译:受生物启发的系统发育模型大大优于没有共同机制的模型

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But Tuffley and Steel (1997) introduced a model called No Common Mechanism (NCM), in which characters may—but are not required to—vary their relative rates independently, both within and between branches. Because the independent variation is taken only as a possibility, not as a requirement, NCM would apply to almost any situation, and so may be accepted as realistic. This is useful because Tuffley and Steel also showed that maximum likelihood under NCM selects the same trees as does parsimony. With the realistic NCM in the background, then, most parsimonious trees have greatest power to explain available observations.
机译:但是Tuffley和Steel(1997)引入了一个模型,称为No Common Mechanism(NCM),在该模型中,字符可以(但不要求)独立地改变分支内部和分支之间的相对比率。由于独立变式仅是一种可能性,而不是一种要求,因此NCM几乎适用于任何情况,因此可以接受。这很有用,因为Tuffley和Steel还表明,在NCM下最大可能性选择与简约相同的树。因此,以现实的NCM为背景,大多数简约的树都具有最大的解释现有观测值的能力。

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  • 来源
    《Systematic Biology》 |2011年第2期|p.225-232|共8页
  • 作者

    Marc A. Suchard;

  • 作者单位

    Department of Integrative Biology, University of California, Berkeley, 3060 VLSB #3140, Berkeley, CA 94720-3140, USA;

    E-mail:;

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  • 正文语种 eng
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