Spatial segregation is defined as inequality in the spatial distribution of social groups in a residential area. It can be measured in relation to various dimensions such as evenness, exposure, concentration, clustering and centralization (Massey & Denton, 1988). There is a distinction between different types of segregation indices:
Eveness refers to the differential distribution of social groups among spatial units in the residential area.
Exposure refers to the potential interaction between members of the same group (intragroup indices) or of different groups (intergroup indices)
Concentration refers to the physical space occupied by social groups in the area.
Clustering refers to the degree to which a group members live disproportionately in contiguous areas
Centranlisation refers to the degree to which a group is located near the center of an residential area
Reference: Massey D. S. and Denton N. A. (1988) ' The dimensions of residential segregation'. Social Forces 67(2), pp. 281-315.