পদ্ধতির তুলনা করুন

	মাইগ্রেশন মডেল (পুশ-পুল / মাল্টিরিজিওনাল)	গতিশীলতা ও অভিবাসনের বিকিরণ মডেল	স্থানিক মিথস্ক্রিয়া (মহাকর্ষ) মডেল
ক্ষেত্র	জনমিতি	স্থানিক বিশ্লেষণ	স্থানিক বিশ্লেষণ
পরিবার	Regression model	Regression model	Regression model
উদ্ভবের বছর	1966	2012	1971
প্রবর্তক	Everett Lee	Filippo Simini et al.	Alan Wilson (entropy-maximizing family)
ধরন	Theoretical-quantitative migration framework	Parameter-free spatial interaction model	Model of flows between spatial origins and destinations
মৌলিক উৎস	Lee, E. S. (1966). A theory of migration. Demography, 3(1), 47–57.	Simini, F., González, M. C., Maritan, A., & Barabási, A.-L. (2012). A universal model for mobility and migration patterns. Nature, 484, 96–100.	Wilson, A. G. (1971). A family of spatial interaction models, and associated developments. Environment and Planning A, 3(1), 1–32.
অপর নাম	Push-Pull Migration Theory, Multiregional Migration Model, Lee Migration Framework, Göç Modelleri	Radiation Law of Human Mobility, Parameter-free Mobility Model, Simini Radiation Model, Radyasyon Modeli	gravity model, spatial interaction model, competing destinations model, mekânsal etkileşim modeli
সম্পর্কিত	3	3	4
সারসংক্ষেপ	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.	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.	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.