Standard spatial autoregressive models rely on spatial weight structures constructed to model dependence among "n" regions. Ways of parsimoniously modeling the connectivity among the sample of <formula format="inline"><simplemath>"N"&equals;"n"-super-2</simplemath></formula> origin-destination (OD) pairs that arise in a closed system of interregional flows has...

type="main" <title type="main">ABSTRACT</title> <p>Spatial interaction or gravity models have been used to model flows that take many forms, for example population migration, commodity flows, traffic flows, all of which reflect movements between origin and destination regions. We focus on how to interpret estimates from...</p>