השוואת שיטות

	מודל SARIMA של שבר מבני	מבחן באי-פררון לשברים מבניים מרובים
תחום	אקונומטריקה	אקונומטריקה
משפחה	Regression model	Hypothesis test
שנת המקור	1970s–1998	1998
הוגה השיטה	Box & Jenkins (SARIMA); Bai & Perron (structural break detection)	Jushan Bai & Pierre Perron
סוג	Time series model with regime shifts	Sequential hypothesis test for multiple structural breaks
מקור מכונן	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.
כינויים	SARIMA with structural breaks, break-augmented SARIMA, piecewise SARIMA, SARIMA-SB	Bai-Perron Multiple Break Test, Multiple Structural Change Test, Sequential Structural Break Test, Çoklu Yapısal Kırılma Testi
קשורות	3	2
תקציר	The Structural Break SARIMA model extends the classical Seasonal ARIMA framework by explicitly detecting and accommodating abrupt, permanent shifts in the level, trend, or seasonal pattern of a time series. Rather than forcing a single SARIMA specification across the entire sample, the model partitions the series at estimated breakpoints and fits separate SARIMA processes to each resulting segment, producing more accurate forecasts and reliable inference in the presence of regime changes.	The Bai-Perron test, introduced by Jushan Bai and Pierre Perron in their landmark 1998 Econometrica paper, is a least-squares-based procedure for detecting, estimating, and testing the number of structural breaks in a linear regression model estimated on time-series data. Unlike single-break tests, it simultaneously identifies multiple change-points in a sample, providing economists and empirical researchers with a rigorous, data-driven way to locate parameter instability across time.