Instability in Principal Component Analysis and the Quantification of Polyphenism in Palaeontological Data

被引：0
|
作者：
Richard A. Reyment
机构：
[1] Naturhistoriska Riksmuseet,Paleozoologiska avdelningen
来源：
Mathematical Geology | 2004年 / 36卷
关键词：
cross-validation; principal component analysis; ecomorphs; ammonites;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The occurrence of cryptic polyphenism (variation in morphological properties within a single species) in ammonites is used to exemplify the application of the multivariate set of techniques known in analytical chemistry as cross-validation to quantify and isolate deviating specimens (ecomorphs) in a genetically homogeneous sample. A byproduct of the analysis bears on a method of identifying redundant variables. A species of Nigerian Turonian (Cretaceous) ammonites of the genus Thomasites is used in the exemplification.
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页码：629 / 638
页数：9
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