เปรียบเทียบวิธี

	การทดสอบ KPSS แบบพารามิเตอร์แปรผันตามเวลา	การทดสอบภาวะอยู่กับที่ของ KPSS
สาขาวิชา	เศรษฐมิติ	เศรษฐมิติ
ตระกูล	Regression model	Regression model
ปีกำเนิด	2000s-2010s	1992
ผู้ริเริ่ม	Extension of Kwiatkowski, Phillips, Schmidt, and Shin (1992); time-varying generalizations developed by Cavaliere, Taylor, and others	Kwiatkowski, Phillips, Schmidt & Shin
ประเภท	Hypothesis test (stationarity)	Stationarity test (reverse of unit-root tests)
แหล่งต้นตำรับ	Kwiatkowski, D., Phillips, P. C. B., Schmidt, P., & Shin, Y. (1992). Testing the null hypothesis of stationarity against the alternative of a unit root: How sure are we that economic time series have a unit root? Journal of Econometrics, 54(1-3), 159-178.	Kwiatkowski, D., Phillips, P. C. B., Schmidt, P., & Shin, Y. (1992). Testing the null hypothesis of stationarity against the alternative of a unit root. Journal of Econometrics, 54(1–3), 159–178.
ชื่อเรียกอื่น	TVP-KPSS test, time-varying KPSS stationarity test, locally stationary KPSS test, TV-KPSS	Kwiatkowski-Phillips-Schmidt-Shin test, stationarity test, KPSS durağanlık testi
ที่เกี่ยวข้อง	3	4
สรุป	The time-varying parameter KPSS test extends the classic Kwiatkowski-Phillips-Schmidt-Shin (1992) stationarity test to settings where the deterministic or stochastic components of a series may shift over time. It tests the null hypothesis of stationarity while allowing the model's parameters to evolve, making it robust to structural instability that would otherwise distort the standard KPSS result.	The KPSS test, introduced by Kwiatkowski, Phillips, Schmidt and Shin in 1992, tests the null hypothesis that a series is stationary against the alternative that it contains a unit root — the reverse of the ADF and Phillips-Perron tests. By flipping the burden of proof, it is designed to be used alongside unit-root tests so that the two can confirm one another and expose ambiguous, borderline cases.