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Titolo: COMPARISON TESTS FOR DENDROGRAMS - A COMPARATIVE-EVALUATION
Autore: LAPOINTE FJ; LEGENDRE P;
- Indirizzi:
- UNIV MONTREAL,DEPT SCI BIOL,CP 6128,SUCC CTR VILLE MONTREAL PQ H3C 3J7 CANADA
- Titolo Testata:
- Journal of classification
fascicolo: 2,
volume: 12,
anno: 1995,
pagine: 265 - 282
- SICI:
- 0176-4268(1995)12:2<265:CTFD-A>2.0.ZU;2-R
- Fonte:
- ISI
- Lingua:
- ENG
- Soggetto:
- AUTO-CORRELATION ANALYSIS; STATISTICAL SIGNIFICANCE; CLADISTIC BIOGEOGRAPHY; PHYLOGENETIC TREES; CONSENSUS INDEXES; PATTERNS; GENERATION; CLASSIFICATIONS; CLADOGRAMS; PLANTS;
- Keywords:
- BINARY TREE; DENDROGRAM; CLASSIFICATION; PERMUTATION TEST; ULTRAMETRIC TREE;
- Tipo documento:
- Article
- Natura:
- Periodico
- Settore Disciplinare:
- Physical, Chemical & Earth Sciences
- CompuMath Citation Index
- Citazioni:
- 56
- Recensione:
- Indirizzi per estratti:
-
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- Citazione:
- F.J. Lapointe e P. Legendre, "COMPARISON TESTS FOR DENDROGRAMS - A COMPARATIVE-EVALUATION", Journal of classification, 12(2), 1995, pp. 265-282
Abstract
Classifications are generally pictured in the form of hierarchical trees, also called dendrograms. A dendrogram is the graphical representation of an ultrametric (= cophenetic) matrix; so dendrograms can be compared to one another by comparing their cophenetic matrices. Three methods used in testing the correlation between matrices corresponding to dendrograms are evaluated. The three permutational procedures make use of different aspects of the information to compare dendrograms: theMantel procedure permutes label positions only; the binary tree methods randomize the topology as well; the double-permutation procedure isbased on all the information included in a dendrogram, that is: topology, label positions, and cluster heights. Theoretical and empirical investigations of these methods are carried out to evaluate their relative performance. Simulations show that the Mantel test is too conservative when applied to the comparison of dendrograms; the methods of binary tree comparisons do slightly better; only the double-permutation test provides unbiased type I error.
ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/11/20 alle ore 18:23:25