Before revision: An emerging area of research is the study of large-scale migration interactions as a network of nodes that represent places (e.g., countries, cities, and rural areas) and edges that encode migration interactions that connect those places.
After revision: An emerging area of research is the study of large-scale migration interactions as a network of nodes that represent places (e.g., countries, cities, and rural areas) and edges that encode migration ties that connect those places.