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In this paper we introduce the Smooth Permanent Surge [SPS] model. The model is an integrated non lineal moving average process with possibly unit roots in the moving average coefficients. The process nests the Stochastic Permanent Break [STOPBREAK] process by Engle and Smith (1999) and in a...
Persistent link: https://www.econbiz.de/10010281224
In this paper we introduce the Smooth Permanent Surge [SPS] model. The model is an integrated non lineal moving average process with possibly unit roots in the moving average coefficients. The process nests the Stochastic Permanent Break [STOPBREAK] process by Engle and Smith (1999) and in a...
Persistent link: https://www.econbiz.de/10005423858
possibility of estimating nonlinear models by methods that take into account endogeneity but provided no tests for exogeneity …
Persistent link: https://www.econbiz.de/10005106400
Recent research has reported the lack of correct size in stationarity test for PPP deviations within a linear framework. However, theoretically well motivated nonlinear models, such as the ESTAR, appear to parsimoniously fit the PPP data and provide an explanation for the PPP ¿puzzle¿....
Persistent link: https://www.econbiz.de/10005731239
In this paper the performance of information criteria and a test against SETAR nonlinearity for outlier contaminated time series are investigated. Additive outliers can seriously influence the properties of the underlying time series and hence of linearity tests, resulting in spurious test...
Persistent link: https://www.econbiz.de/10011521180
In this paper the performance of information criteria and a test against SETAR nonlinearity for outlier contaminated time series are investigated. Additive outliers can seriously influence the properties of the underlying time series and hence of linearity tests, resulting in spurious test...
Persistent link: https://www.econbiz.de/10011488709
dependence between possibly endogenous explanatory variables and disturbances in a linear structural equation (endogeneity … parameters). We focus on second-order dependence and stress the distinction between regression and covariance endogeneity … least-square methods). We observe that endogeneity parameters may not be identifiable and we give the relevant …
Persistent link: https://www.econbiz.de/10011183777
dependence between possibly endogenous explanatory variables and disturbances in a linear structural equation (endogeneity … parameters). We focus on second-order dependence and stress the distinction between regression and covariance endogeneity … with least-squares methods). We observe that endogeneity parameters may not be identifiable and we give the relevant …
Persistent link: https://www.econbiz.de/10011107877
dependence between possibly endogenous explanatory variables and disturbances in a linear structural equation (endogeneity … parameters). We focus on second-order dependence and stress the distinction between regression and covariance endogeneity … with least-square methods). We observe that endogeneity parameters may not be identifiable and we give the relevant …
Persistent link: https://www.econbiz.de/10010894992
We propose a general test for exogeneity that is robust against distributional misspecification. The test can also be used to identify other types of misspecifications, such as the presence of a random coefficient. The idea is to sort the data with respect to a variable (a sorting score) and...
Persistent link: https://www.econbiz.de/10010321023