Community Ecology
Volume/Issue:
Volume 8: Issue 1
Comparison of single and complete linkage clustering with the hierarchical factor classification of variables
Authors:
S. CamizUniversità di Roma La Sapienza Dipartimento di Matematica Guido Castelnuovo Piazzale Aldo Moro, 2 I-00185 Roma Italia

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V. PillarUniversidade Federal de Rio Grande do Sul Departamento de Ecologia 91540-000 Porto Alegre RS Brazil

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Pages:
25–30
Online Publication Date:
23 Apr 2007
Publication Date:
01 Jun 2007
Article Category:
Research Article
DOI:
https://doi.org/10.1556/comec.8.2007.1.4
Keywords:
Classification of variables; Comparison of methods; Hierarchical classification; Principal Components Analysis; Randomization tests; Simulated correlation matrices
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We assess the performance of a new clustering method for Hierarchical Factor Classification of variables, which is based on the evaluation of the least differences among representative variables of groups, as defined by a set of two-dimensional Principal Components Analysis. As an additional feature the method gives at each step a principal plane where both grouped variables and units, as seen only by these variables, can be projected. We compare the method results with both single and complete linkage clustering, applied to simulated data with known correlation structure and we evaluate the results with a coherence measure based on the entropy between the expected partitions and those found by the methods. We found that the Hierarchical Factor Classification method performed as good as, and in some cases better than, both single and complete linkage clustering in detecting the known group structures in simulated data, with the advantage that the groups of variables and the units can be viewed on principal planes where usual interpretations apply.

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Cover Community Ecology
Community Ecology An Interdisciplinary Journal Reporting Progress in Community and Population Studies
Print ISSN:
1585-8553
Online ISSN:
1588-2756

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Community Ecology
Language English
Size A4
Year of
Foundation		 2000
Volumes
per Year		 1
Issues
per Year		 3
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1585-8553 (Print)
ISSN 1588-2756 (Online)

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