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| Spatial Gini Concentration Index× | Gini Coefficient× | |
|---|---|---|
| Fagområde≠ | Human Geography | Sociology |
| Familie | Process / pipeline | Process / pipeline |
| Oprindelsesår≠ | 1991 | 1912 |
| Ophavsperson≠ | Corrado Gini (coefficient); locational adaptation in regional science / economic geography | Corrado Gini |
| Type≠ | Descriptive index of how unevenly an activity is distributed across space | Scalar measure of statistical dispersion / inequality |
| Oprindelig kilde≠ | Duncan, O. D., & Duncan, B. (1955). A methodological analysis of segregation indexes. American Sociological Review, 20(2), 210–217. DOI ↗ | Ceriani, L., & Verme, P. (2012). The origins of the Gini index: extracts from Variabilità e Mutabilità (1912) by Corrado Gini. The Journal of Economic Inequality, 10(3), 421–443. DOI ↗ |
| Aliasser | Locational Gini Coefficient, Spatial Gini Index, Geographic Concentration Index, Gini Index of Spatial Inequality | Gini index, Gini ratio, Gini concentration ratio, G |
| Relaterede≠ | 4 | 5 |
| Resumé≠ | The spatial (or locational) Gini concentration index adapts the classic Gini coefficient to geography, summarizing in a single number between zero and one how unevenly an activity — an industry, a population group, a resource — is distributed across spatial units relative to a benchmark such as total population or land area. It is the workhorse measure for quantifying geographic concentration and agglomeration in economic geography. | The Gini coefficient is the most widely used single-number summary of inequality in a distribution such as income or wealth. Introduced by the Italian statistician Corrado Gini in 1912, it equals twice the area between the Lorenz curve and the line of perfect equality, ranging from 0 when everyone has the same amount to a maximum approaching 1 when one unit holds everything. |
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