Dimension Reduction in the Topology of Multilayer Spatial Networks: The Case of the Interregional Commuting in Greece

Abstract The daily commuting out of the city residence for labor purposes is a complex phenomenon driven by various geographical, transportation, economic, and social forces. Due to its high level complexity, current modeling approaches are mainly disciplinary thus lack multifaceted approach incorporating diverse conceptualization this phenomenon. To contribute demand, paper develops methodological framework integrating aspects different contexts, functionality, geographical resolution. proposed builds on network principal component analysis first develop multilayer graph interregional commuting, next configure variables representing topology, finally decompose total model into components expressing uncorrelated in overall commuting. conceptualizes spatial distance as major force topology quantitative evaluating consistency across layers resolutions functionality. provides insights structure functionality promotes integrated macroeconomic regional research.