Compara mètodes

	Model de Radiació de Mobilitat i Migració	Model de Huff	Models de migració (empeny-tira / multiregional)	Models d'interacció espacial (de gravetat)
Camp	Anàlisi espacial	Anàlisi espacial	Demografia	Anàlisi espacial
Família	Regression model	Regression model	Regression model	Regression model
Any d'origen	2012	1964	1966	1971
Autor original	Filippo Simini et al.	David Huff	Everett Lee	Alan Wilson (entropy-maximizing family)
Tipus	Parameter-free spatial interaction model	Probabilistic spatial interaction model	Theoretical-quantitative migration framework	Model of flows between spatial origins and destinations
Font seminal	Simini, F., González, M. C., Maritan, A., & Barabási, A.-L. (2012). A universal model for mobility and migration patterns. Nature, 484, 96–100.	Huff, D. L. (1964). Defining and estimating a trading area. Journal of Marketing, 28(3), 34–38.	Lee, E. S. (1966). A theory of migration. Demography, 3(1), 47–57.	Wilson, A. G. (1971). A family of spatial interaction models, and associated developments. Environment and Planning A, 3(1), 1–32.
Àlies	Radiation Law of Human Mobility, Parameter-free Mobility Model, Simini Radiation Model, Radyasyon Modeli	Huff Gravity Model, Probabilistic Retail Gravity Model, Huff Trade Area Model, Huff Çekim Modeli	Push-Pull Migration Theory, Multiregional Migration Model, Lee Migration Framework, Göç Modelleri	gravity model, spatial interaction model, competing destinations model, mekânsal etkileşim modeli
Relacionats	3	3	3	4
Resum	The Radiation Model, introduced by Simini et al. in 2012, is a parameter-free model for predicting human mobility and migration flows between geographic locations. Drawing an analogy from radiation physics, it predicts trip volumes based solely on population sizes at origin and destination, and the intervening population within the circle connecting them. It has been widely applied to commuting flows, migration, and epidemic spreading.	Proposed by David Huff in 1964, the Huff Model is a probabilistic spatial interaction model that estimates the likelihood that consumers located in a given geographic zone will choose to shop at a particular retail outlet. It extends deterministic gravity models by assigning each consumer zone a probability of patronage across all competing stores, weighting store attractiveness (typically measured by floor area) against the friction of travel time or distance. The model is widely used in retail site selection, trade area delineation, and market share forecasting.	Migration models are quantitative frameworks for explaining and forecasting population movement between geographic units. Lee's (1966) push-pull theory classifies factors at origin and destination into positive and negative forces, modulated by intervening obstacles. Widely used by demographers, regional planners, and policy researchers to project labor mobility, refugee flows, and urbanization trends across national and subnational geographies.	Spatial interaction models predict the volume of flows — migrants, commuters, shoppers, trade, trips — between origins and destinations as a function of the size of each place and the distance or cost separating them. By analogy to Newton's gravity, interaction rises with the 'mass' of origin and destination and falls with separation, and Wilson's 1971 entropy-maximizing family put these models on a rigorous footing for transport, migration, and retail analysis.