A cluster analysis of some shapes of diatom valves-Reference-Cited by-同舟云学术

A cluster analysis of some shapes of diatom valves

Published:2023 Issue:2(32) Volume: Page:185-188
ISSN:2311-0147
Container-title:Issues of modern algology (Вопросы современной альгологии)
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Author:

Lyakh Anton M.¹^ORCID

Affiliation:

1. Kovalevsky Institute of Marine Biological Research RAS, Sevastopol, Russia

Abstract

The results of the application of a cluster analysis to the shapes of some diatom valves are presented in the paper. The cluster analysis uses numeric descriptors of the shapes. To get such descriptors, the outlines of shapes have been transformed to the sequences of normalized and coordinated coefficients of elliptic Fourier transform. The coefficients have been used to construct shape dendrograms with the help of thee variants of hierarchical cluster analysis. The dendrograms have been truncated at the level of 6, 10 and 20 clusters. From the obtained clusters the stable groups of shapes, that are presented in all variant of clustering, have been separated. For each shape group an average shape have been constructed, which has been considered as a type shape. The type shapes are used as a template for the classification of the other shapes of diatom valves.

Publisher

Farwater LLC

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