arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0901.2825physics.soc-phnlin.AO
收藏

偏好还是机会?为什么我们在更多的异质性学校中发现更多的友谊隔离?

Preference or opportunity? Why do we find more friendship segregation in more heterogeneous schools?

Andreas Flache, Tobias Stark

摘要:

对学校友谊网络的研究表明,异质性增加了同质性偏好。我们认为,这可能是一个误导性的解释指数随机图模型(p*)的系数,用于模拟网络数据。如果学生希望避免完全没有朋友,那么少数民族学生可能似乎愿意在一个更同质的学校中与多数民族学生更好地融合,即使在所有学校中,对拥有同一种族朋友的偏好都是一样的。我们使用网络形成的随机效用模型,在计算实验中研究驱动网络选择的偏好的影响。我们为不同的学校组合生成模拟网络,但具有相同的参数偏好同质性。我们估计与p* 模型对这些模拟数据的系数相同的种族(模拟)的友谊选择的影响。测试证实,p* 系数相同的种族的影响是大得多的人口与大量的少数民族,虽然实际的同质性偏好是相同的所有模拟学校组成。

英文摘要:

Research on friendship networks in schools suggests that heterogeneity increases homophily preferences. We argue that this may be a misleading interpretation of the coefficients of the exponential random graph models (p*) that are used to model the network data. If students wish to avoid having no friends at all, then minority students may appear to be willing to integrate more with the majority in a more homogeneous school, even if the preference for having same ethnicity friends has the same strength in all schools. We use a random utility model of network formation to study in computational experiments the effects of the preferences that drive network choices. We generate simulated networks for different school compositions but with the same parameter for a preference for homophily. We estimate with a p* model on these simulated data the coefficients for the effect of same ethnicity on (simulated) friendship choice. The tests confirm that p* coefficients for the effect of same ethnicity are much larger in populations with a large minority, although actual homophily preferences are the same across all simulated school compositions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑