So sánh phương pháp

	Phương pháp Ước tính Dân số theo Sinh-Tử-Di cư (Cohort-Component Projection)	Mô hình Tương tác Không gian (Trọng lực)
Lĩnh vực	Nhân khẩu học	Phân tích không gian
Họ	Process / pipeline	Regression model
Năm ra đời	2001	1971
Người khởi xướng	Preston, Heuveline & Guillot	Alan Wilson (entropy-maximizing family)
Loại	Demographic projection pipeline	Model of flows between spatial origins and destinations
Công trình gốc	Preston, S. H., Heuveline, P., & Guillot, M. (2001). Demography: Measuring and Modeling Population Processes. Blackwell. ISBN: 978-1-557-86451-2	Wilson, A. G. (1971). A family of spatial interaction models, and associated developments. Environment and Planning A, 3(1), 1–32.
Tên gọi khác	Cohort-Component Method, Component Method of Population Projection, Age-Sex-Specific Population Projection, Kohort-Bileşen Projeksiyonu	gravity model, spatial interaction model, competing destinations model, mekânsal etkileşim modeli
Liên quan	3	4
Tóm tắt	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.	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.