Krahasoni metodat

	Test Zivot-Andrews me Parametër që Varet nga Koha për Rrënjë Njësore	Test Zivot-Andrews për Ndërprerje Strukturore të Rrënjës Njëshe
Fusha	Ekonometri	Ekonometri
Familja	Regression model	Regression model
Viti i origjinës	1992 (base test); TVP adaptation in later applied work	1992
Krijuesi	Zivot & Andrews (1992); TVP extension in subsequent applied econometrics literature	Eric Zivot and Donald W. K. Andrews
Lloji	Unit root test with endogenous structural break under time-varying parameters	Unit root test with endogenous structural break
Burimi themelues	Zivot, E., & Andrews, D. W. K. (1992). Further Evidence on the Great Crash, the Oil-Price Shock, and the Unit-Root Hypothesis. Journal of Business & Economic Statistics, 10(3), 251–270.	Zivot, E., & Andrews, D. W. K. (1992). Further evidence on the great crash, the oil-price shock, and the unit-root hypothesis. Journal of Business & Economic Statistics, 10(3), 251–270.
Emërtime të tjera	TVP Zivot-Andrews test, time-varying Zivot-Andrews unit root test, TVP-ZA test	Zivot-Andrews test, ZA unit root test, endogenous structural break unit root test, ZA breakpoint test
Të lidhura	6	6
Përmbledhja	The time-varying parameter Zivot-Andrews test extends the classic Zivot-Andrews (1992) structural break unit root test by allowing the regression coefficients to evolve over time. Rather than assuming fixed parameters across the full sample, this approach lets the autoregressive dynamics and break timing adapt through a state-space or rolling framework, improving robustness when economic relationships shift gradually.	The Zivot-Andrews test is an endogenous structural break unit root test that determines the break point from the data rather than imposing it externally. It tests for a unit root against the alternative of stationarity around a single structural break — in the mean, the trend, or both — choosing the break date that provides the strongest evidence against the null.