ABSTRACT
Spatial interaction is a broad term encompassing any movement over space that results from a human process. It includes joumey-to-work, migration, commodity and information flows, student enrollments and conference attendance, the utilization of public and private facilities, and even the transmission of knowledge (see Haynes and Fotheringham, 1984; Batten and Boyce, 1986; Fotheringham and O’Kelly, 1989; Openshaw, 1997). Gravity models are the most widely used types of spatial interaction models. They are mathematical formulations that typically acknowledge the importance of measures of origin propulsiveness, destination attractiveness, and spatial separation as most important determinants to analyze and forecast spatial interaction flows in a spatial system of regions or other basic spatial units.
