手法を比較

	構造的ブレークOLS	ベクトル自己回帰 (VAR)
分野	計量経済学	計量経済学
系統	Regression model	Regression model
提唱年	1960–1998	1980
提唱者	Chow (1960) for the breakpoint test; Bai & Perron (1998) for multiple break estimation	Christopher A. Sims
種類	Segmented linear regression	Multivariate time-series model
原典	Bai, J., & Perron, P. (1998). Estimating and testing linear models with multiple structural changes. Econometrica, 66(1), 47–78.	Sims, C. A. (1980). Macroeconomics and Reality. Econometrica, 48(1), 1–48.
別名	OLS with structural breaks, piecewise OLS, regime-switching OLS, breakpoint regression	VAR, VAR model, vector autoregressive model, multivariate autoregression
関連	6	5
概要	Structural Break OLS extends ordinary least squares to allow regression coefficients to shift at one or more breakpoints in time or across regimes. Rather than forcing a single coefficient vector across the entire sample, the model partitions the data and estimates a separate OLS regression within each segment, making it appropriate when economic relationships are suspected to change due to policy shifts, crises, or other structural events.	Vector Autoregression is a multivariate time-series model in which each variable is regressed on its own lags and the lags of all other variables in the system. Originally proposed by Sims (1980) as a data-driven alternative to large structural macroeconomic models, VAR has become the standard workhorse for dynamic analysis in empirical economics and finance.