مقایسهٔ روش‌ها

	Migration Models (Push-Pull / Multiregional)	روش پیش‌بینی جمعیت مبتنی بر گروه سنی و مولفه‌ها	مدل تابش تحرک و مهاجرت
حوزه	جمعیت‌شناسی	جمعیت‌شناسی	تحلیل فضایی
خانواده	Regression model	Process / pipeline	Regression model
سال پیدایش	1966	2001	2012
پدیدآور	Everett Lee	Preston, Heuveline & Guillot	Filippo Simini et al.
نوع	Theoretical-quantitative migration framework	Demographic projection pipeline	Parameter-free spatial interaction model
منبع بنیادین	Lee, E. S. (1966). A theory of migration. Demography, 3(1), 47–57.	Preston, S. H., Heuveline, P., & Guillot, M. (2001). Demography: Measuring and Modeling Population Processes. Blackwell. ISBN: 978-1-557-86451-2	Simini, F., González, M. C., Maritan, A., & Barabási, A.-L. (2012). A universal model for mobility and migration patterns. Nature, 484, 96–100.
نام‌های دیگر	Push-Pull Migration Theory, Multiregional Migration Model, Lee Migration Framework, Göç Modelleri	Cohort-Component Method, Component Method of Population Projection, Age-Sex-Specific Population Projection, Kohort-Bileşen Projeksiyonu	Radiation Law of Human Mobility, Parameter-free Mobility Model, Simini Radiation Model, Radyasyon Modeli
مرتبط	3	3	3
خلاصه	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.	Cohort-Component Projection is the standard demographic method for forecasting future population size and age-sex structure by explicitly tracking births, deaths, and migration for each age-sex cohort across discrete time steps. Systematically formalized in the textbook literature by Preston, Heuveline, and Guillot (2001), the method builds on foundational actuarial and demographic work dating to the early twentieth century and remains the workhorse technique used by national statistical offices and international organizations worldwide.	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.