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On seasonal error correction when the processes include different numbers of unit roots
Lyhagen, Johan (contributor); Löf, Mårten (contributor) - 2001 - [Elektronische Ressource], Rev. March 15, 2001
forecast mean squared error criterion and certain parameter estimation results indicate that, in practice, a cointegration …We propose a seasonal cointegration model [SECM] for quarterly data which includes variables with different numbers of … forecast, is an ordinary VAR model, also in annual differences. -- Seasonal cointegration ; forecasting …
Persistent link: https://www.econbiz.de/10001600047
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Testing for unit roots in nonlinear dynamic heterogeneous panels
He, Changli (contributor); Sandberg, Rickard (contributor) - 2005 - [Elektronische Ressource]
In this paper we present a unit root test against a nonlinear dynamic heterogenous panel with each cross section modelled as an LSTAR model. All parameters are viewed as cross section specific. We allow for serially correlated residuals over time and heterogenous variance among cross sections....
Persistent link: https://www.econbiz.de/10002595402
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Testing parameter constancy in unit root autoregressive models against continuous change
He, Changli (contributor); Sandberg, Rickard (contributor) - 2005 - [Elektronische Ressource], Rev. February 8, 2005
In this paper we derive tests for parameter constancy when the data generating process is non-stationary against the hypothesis that the parameters of the model change smoothly over time. To obtain the asymptotic distributions of the tests we generalize many theoretical results, as well as new...
Persistent link: https://www.econbiz.de/10002570513
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Inference for unit roots in a panel smooth transition autoregressive model where the time dimension is fixed
He, Changli (contributor); Sandberg, Rickard (contributor) - 2005 - [Elektronische Ressource], Rev. February 18, 2005
transitions ; Structural breaks ; Unit roots ; LSDV estimation ; Central limit theorem …
Persistent link: https://www.econbiz.de/10002577852
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Why not use standard panel unit root test for testing PPP
Lyhagen, Johan (contributor) - 2000 - [Elektronische Ressource]
In this paper we show the consequences of applying a panel unit root test when testing for a purchasing power parity relationship. The distribution of the tests investigated, including the IPS test of Im et al (1997), are influenced by a common stochastic trend which is usually not accounted...
Persistent link: https://www.econbiz.de/10001600044
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Testing the unit root hypothesis against the logistic smooth transition autoregressive model
Eklund, Bruno (contributor) - 2003 - [Elektronische Ressource]
In this paper two simple tests to distinguish between unit root processes and stationary nonlinear processes are proposed. New limit distribution results are provided, together with two F type test statistics for the joint unit root and linearity hypothesis against a specific nonlinear...
Persistent link: https://www.econbiz.de/10001845685
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A nonlinear alternative to the unit root hypothesis
Eklund, Bruno (contributor) - 2003 - [Elektronische Ressource]
This paper considers testing the unit root hypothesis against a smooth transition autoregressive model as the alternative. The model specification makes it possible to discriminate between nonstationary random walk and stationary nonlinear processes. Some new limit results are presented,...
Persistent link: https://www.econbiz.de/10001845699
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Error correction in DHSY
Eliasson, Ann-Charlotte (contributor);  … - 2002 - [Elektronische Ressource]
In this note, we consider the contradiction between the fact that the best fit for the UK consumption data in Davidson et al. (1978) is obtained using an equation with an intercept but without an error correction term, whereas the equation with error correction and without the intercept has...
Persistent link: https://www.econbiz.de/10001714625
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Modelling the demand for M3 in the unified Germany
Wolters, Jürgen; Teräsvirta, Timo; Lütkepohl, Helmut - 1996
Persistent link: https://www.econbiz.de/10000936487
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Dickey-Fuller type of tests against nonlinear dynamic models
He, Changli (contributor); Sandberg, Rickard (contributor) - 2005 - [Elektronische Ressource]
In this paper we introduce several test statistics of testing the null hypotheses of a random walk (with or without drift) against models that accommodate a smooth nonlinear shift in the level, the dynamic structure, and the trend. We derive analytical limiting distributions for all tests....
Persistent link: https://www.econbiz.de/10002577830