Ethnic segregation is defined as the degree to which two or more subgroups of population by ethnicity are separated from each other. Whether or not two groups are separated is a debate reflecting on the definition of what ‘separation’ means: sharing the same space where to reside, having the same opportunities for daily encounters or for work, or the space for leisure and cultivation of friendship relations. In this paper, we focus on the relation between ethnic residential segregation and friendship relations. We analyse the residential behaviour and friendship of foreigners in Milan (the nine major citizenships), which is the most important urban area in the national settlement system of Italy and the most attractive area in the migratory Italian panorama. We show how residential behaviour can only partially explain friendship relations between immigrants and natives, since different ethnic groups tend to settle on the territory and interact with others depending on the characteristics of individuals and their immigration history. Data come from the population register (2005–2009) and the 2007 Regional Observatory for Integration and Multi-ethnicity Survey. Results are based on indices of segregation and multilevel multinomial logistic regression models.

中文翻译：

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邻居和朋友？居住区隔离可以解释种族隔离吗？米兰案（意大利）

种族隔离的定义是按种族划分的两个或多个人口子群彼此分隔的程度。是否将两个群体分隔开来是一场辩论，它在思考“分隔”的含义：共享相同的居住空间，享有日常相遇或工作的相同机会，或拥有休闲和发展友谊关系的空间。在本文中，我们着重研究种族居民隔离与友谊关系之间的关系。我们分析了米兰（九个主要国籍）在米兰的外国人的居住行为和友谊，这是意大利国家定居系统中最重要的城市地区，也是意大利人口迁移中最具吸引力的地区。我们将展示居住行为如何仅能部分解释移民与原住民之间的友谊关系，因为不同种族倾向于根据自己的特征和移民历史在该领土上定居并与他人互动。数据来自人口登记册（2005-2009年）和2007年地区一体化与多民族调查天文台。结果基于隔离指数和多层多项式逻辑回归模型。