เปรียบเทียบวิธี

	Structural Break GLS	Structural Break OLS
สาขาวิชา	เศรษฐมิติ	เศรษฐมิติ
ตระกูล	Regression model	Regression model
ปีกำเนิด	1998 (structural break GLS formalization)	1960–1998
ผู้ริเริ่ม	Bai & Perron (1998); GLS framework by Aitken (1936)	Chow (1960) for the breakpoint test; Bai & Perron (1998) for multiple break estimation
ประเภท	Regression estimator	Segmented linear regression
แหล่งต้นตำรับ	Bai, J., & Perron, P. (1998). Estimating and testing linear models with multiple structural changes. Econometrica, 66(1), 47–78.	Bai, J., & Perron, P. (1998). Estimating and testing linear models with multiple structural changes. Econometrica, 66(1), 47–78.
ชื่อเรียกอื่น	GLS with structural breaks, break-adjusted GLS, structural change GLS, regime-switching GLS	OLS with structural breaks, piecewise OLS, regime-switching OLS, breakpoint regression
ที่เกี่ยวข้อง	6	6
สรุป	Structural Break GLS combines Generalized Least Squares estimation with explicit allowance for regime shifts in the data-generating process. The method estimates separate coefficient vectors for each segment defined by detected break dates while correcting for non-spherical errors — heteroscedasticity or autocorrelation — that frequently accompany structural change, yielding consistent and efficient estimates across all regimes.	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.