Comparer des méthodes

	Dissimilarité de Bray-Curtis	Distance de Canberra
Domaine	Prise de décision	Prise de décision
Famille	MCDM	MCDM
Année d'origine	1957	1967
Auteur d'origine	John Bray and John T. Curtis	Geoffrey Lance and William Williams
Type	Ecological community similarity measure	Normalized city-block distance
Source fondatrice	Bray, J. R., & Curtis, J. T. (1957). An ordination of the upland forest communities of southern Wisconsin. Ecological Monographs, 27(4), 325-349.	Lance, G. N., & Williams, W. T. (1967). A general theory of classificatory sorting strategies. Computer Journal, 10(3), 271-277.
Alias	Bray-Curtis index, Sorensen-Bray-Curtis, percentage difference	Canberra metric, normalized Manhattan distance
Apparentées	3	1
Résumé	Bray-Curtis dissimilarity is a quantitative measure of compositional difference between two samples, widely used in ecology and community analysis. Introduced by John Bray and John T. Curtis in 1957 for comparing forest communities, this index ranges from 0 (identical composition) to 1 (completely different). It is sensitive to abundance differences and is particularly effective for abundance data such as species counts, microbial populations, or preference intensities.	Canberra distance is a weighted version of the Manhattan distance that normalizes differences by the sum of absolute values. Introduced by Geoffrey Lance and William Williams in 1967 as part of their work on clustering classification methods, this metric emphasizes differences in small values and is sensitive to changes in relative proportions. It is commonly used in taxonomy, ecology, decision-making, and any application where normalized relative differences matter.