BRANCH SUPPORT AND TREE STABILITY
BRANCH SUPPORT AND TREE STABILITY
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DOI：
10.1111/j.1096-0031.1994.tb00179.x
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发表时间：
1994-09-01
期刊：
影响因子：
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通讯作者：
BREMER, K
中科院分区：
文献类型：
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作者：
BREMER, K
分支支持被量化为在最近的简约树的共识中失去分支所需的额外长度。该方法仅基于原始数据，而不是引导过程中使用的数据扰动。如果树是通过 Farris 的逐次近似字符加权方法生成的，则应根据失去分支所需的加权额外长度来检查分支支持。树上所有分支支持值的总和除以最简约树的长度提供了一个新索引，即总支持索引。该指数是根据支持的分辨率来衡量树的稳定性，这在分支分析中至关重要。
Branch support is quantified as the extra length needed to lose a branch in the consensus of near-most-parsimonious trees. This approach is based solely on the original data, as opposed to the data perturbation used in the bootstrap procedure. If trees have been generated by Farris's successive approximations approach to character weighting, branch support should be examined in terms of weighted extra length needed to lose a branch. The sum of all branch support values over the tree divided by the length of the most parsimonious tree[s] provides a new index, the total support index. This index is a measure of tree stability in terms of supported resolution, which is of prime importance in cladistic analysis.