Comparer des méthodes

	Index of Dissimilarity	Theil Segregation Index
Domaine	Sociology	Sociology
Famille	Process / pipeline	Process / pipeline
Année d'origine	1955	1971
Auteur d'origine	Otis Dudley Duncan & Beverly Duncan	Henri Theil & Anthony Finizza
Type	Index of evenness of two groups across units	Entropy-based multigroup segregation index
Source fondatrice	Duncan, O. D., & Duncan, B. (1955). A methodological analysis of segregation indexes. American Sociological Review, 20(2), 210–217.	Theil, H., & Finizza, A. J. (1971). A note on the measurement of racial integration of schools by means of informational concepts. Journal of Mathematical Sociology, 1(2), 187–193.
Alias	dissimilarity index, Duncan index, D index, segregation index	Theil's H, information theory index, entropy segregation index, multigroup entropy index
Apparentées	5	5
Résumé	The index of dissimilarity, often called the Duncan segregation index, measures how unevenly two groups — such as two racial or occupational groups — are distributed across a set of units like neighborhoods, schools, or occupations. It ranges from 0, when both groups have identical distributions across units, to 1, when the units are completely segregated, and has the intuitive interpretation of the share of one group that would have to relocate to achieve an even distribution.	Theil's information index, denoted H, is an entropy-based measure of segregation that, unlike the two-group dissimilarity index, handles any number of groups at once. It compares the diversity (entropy) found within each unit to the diversity of the whole population: segregation is high when units are internally homogeneous even though the overall population is diverse. Its defining virtue is exact decomposability across nested levels and across groups.