Neue Gattungen und Arten nordamerikanischer Copeognathen
Neue Gattungen und Arten nordamerikanischer Copeognathen
复制标题
新加通根艺术与北欧艺术
DOI：
10.1111/j.1096-0031.1991.tb00042.x
复制
发表时间：
1991
期刊：
影响因子：
3.6
通讯作者：
G. Enderlein
中科院分区：
文献类型：
--
作者：
G. Enderlein
给出了两个常用的简约程序Hennig 86的精确算法。Farris和PAUP由D. Swofford有时会产生不同的解决方案，有时会产生不受分析数据支持的解决方案。这些差异显然涉及对缺失条目的处理，这些条目目前可能代表未知数据、不适用的特征和/或多态分类群。这些潜在的歧义来源中的每一个在逻辑上（如果不是计算上）是不同的;对于二进制字符，未知数据可以是0或1，不适用的字符既不是0也不是1，多态性是0和1。不能得到已知国家属性的任何可能组合支持的决议应被标记为这样或完全禁止。
The exact algorithms of two commonly used parsimony programs, Hennig86 by J. S. Farris and PAUP by D. Swofford, sometimes produce different solutions, and sometimes produce resolutions that are not supported by the data being analysed. The discrepancies apparently involve the treatment of missing entries, which can currently represent unknown data, inapplicable character and/or polymorphic taxa. Each of those potential sources of ambiguity is logically (if not computationally) different; with regard to binary characters, unknown data could be either 0 or 1, inapplicable characters are neither 0 nor 1 and polymorphisms are both 0 and 1. Resolutions that cannot be supported by any possible combination of known state attributions should either be flagged as such or suppressed entirely.