Permutation tail probability test

permutation tail probability (PTP) test

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Glossary of "Cladistics (2nd ed.)" by Kitching et al. (1998)

  • A procedure that attempts to assess the degree of cladistic covariation in a data set by permuting the states of each character and randomly reassigning them to the ingroup taxa in such a way that the proportions of each state are maintained. This process is repeated to produce a large number of such pseudoreplicate data sets, which are then analysed cladistically. The PTP is defined as the proportion of all data sets (permuted plus original) that yield cladograms equal to or shorter than those produced from the original data set.


広島大学 / デジタル自然史博物館 / 植物 / アルファベット順 / P | 仮名順 にもどる