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	Spatial Dissimilarity Index	Theil Segregation Index
Odbor	Human Geography	Sociology
Rodina	Process / pipeline	Process / pipeline
Rok vzniku	1993	1971
Tvorca	Richard Morrill & David Wong	Henri Theil & Anthony Finizza
Typ	Boundary-aware index of residential segregation between two groups	Entropy-based multigroup segregation index
Pôvodný zdroj	Wong, D. W. S. (1993). Spatial indices of segregation. Urban Studies, 30(3), 559–572.	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.
Ďalšie názvy	Spatial Index of Dissimilarity, Adjusted Dissimilarity Index, Boundary-Adjusted Dissimilarity, Spatial Segregation Index	Theil's H, information theory index, entropy segregation index, multigroup entropy index
Príbuzné	4	5
Zhrnutie	The spatial dissimilarity index is a boundary-aware measure of residential segregation that corrects the classic index of dissimilarity for the fact that areal units are not isolated boxes but neighbours that share borders. Developed by Richard Morrill in 1991 and refined by David Wong in 1993, it discounts the aspatial index by the degree to which adjacent units differ in group composition, so that two groups clustered into separate but neighbouring areas are recorded as less segregated than two groups locked into a checkerboard. It directly addresses the long-standing checkerboard problem that the aspatial Duncan index cannot see.	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.