The Doubly Constrained Model of Spatial Interaction: A More General Formulation

1 February 1985

journal article
research article
Published by SAGE Publications in Environment and Planning A: Economy and Space

Vol. 17 (2) , 253-262
https://doi.org/10.1068/a170253

Abstract

Concerned with the doubly constrained case of spatial interaction models, this paper introduces a general functional form that subsumes the usual multiplicative (Wilson) and additive (Tobler) variants as extreme variants. Specifically, this formulation depends on a scalar Λ allowed to vary between 0 (multiplicative case) and 1 (additive case). A computational procedure is suggested and then illustrated by means of an application to interregional migration data.

Keywords

GENERATING FUNCTION

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