论文标题
全球人口迁移网络的结构和动态
Structure and Dynamic of Global Population Migration Network
论文作者
论文摘要
跨境移民对起源和目的地产生了经济和文化的影响，也是反映相关国家国际关系的关键。实际上，国家的迁移关系是复杂且多边的，但是大多数传统的迁移模型都是双边的。网络理论可以更好地描述全球迁移，以更清楚地显示结构和统计特征。根据估计的迁移数据和差异过滤算法，描述全球多边迁移关系的网络已在五十年内在200个国家中提取。结果表明，1960 - 2015年期间的全球迁移网络表现出聚类和分离特征，这意味着在这些年中，全球化和多极化的迁移变化。将网络嵌入庞加莱磁盘中，得出一种典型和分层的“核心局部”结构，该结构与角度密度分布相关，已被用来描述自1990年代以来的“多中心”趋势。对社区的相关性和演变的分析表明，自1990年代以来，大多数社区仍然存在一些结构性变化的稳定性，这反映了重要的历史事件可以为区域甚至全球移民模式贡献。
Cross-border migration brings economic and cultural impacts to the origin and destination, and is also a key to reflect the international relations of related countries. In fact, the migration relationships of countries are complex and multilateral, but most traditional migration models are bilateral. Network theories could provide a better description of global migration to show the structure and statistical characteristics more clearly. Based on the estimated migration data and disparity filter algorithm, the networks describing the global multilateral migration relationships has been extracted among 200 countries over fifty years. The results show that the global migration networks during 1960-2015 exhibit a clustering and disassortative feature, implying globalized and multipolarized changes of migration during these years. The networks were embed into a Poincaré disk, yielding a typical and hierarchical "core-periphery" structure which, associated with angular density distribution, has been used to describe the "multi-centering" trend since 1990s. Analysis on correlation and evolution of communities indicates the stability of most communities yet some structural changes still exist since 1990s, which reflect that the important historical events are contributable to regional and even global migration patterns.
