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Persistent link: https://www.econbiz.de/10013534484
-varying volatility. In this paper we consider estimation and hypothesis testing on the coefficients of the co-integrating relations and … model for volatility, or to assume that the pattern of volatility is common to, or independent across, the vector of series …
Persistent link: https://www.econbiz.de/10010225789
This paper provides an extensive Monte-Carlo comparison of severalcontemporary cointegration tests. Apart from the … estimation or semi-nonparametric density approximations. Thecomparison is completed with a fully nonparametric cointegration test …
Persistent link: https://www.econbiz.de/10011300549
We derive a framework for asymptotically valid inference in stable vector autoregressive (VAR) models with conditional heteroskedasticity of unknown form. We prove a joint central limit theorem for the VAR slope parameter and innovation covariance parameter estimators and address bootstrap...
Persistent link: https://www.econbiz.de/10011490564
In many, if not most, econometric applications, it is impossible to estimate consistently the elements of the white-noise process or processes that underlie the DGP. A common example is a regression model with heteroskedastic and/or autocorrelated disturbances,where the heteroskedasticity and...
Persistent link: https://www.econbiz.de/10011774249
This paper provides a multivariate score-type test to distinguish between true and spurious long memory. The test is based on the weighted sum of the partial derivatives of the multivariate local Whittle likelihood function. This approach takes phase shifts in the multivariate spectrum into...
Persistent link: https://www.econbiz.de/10010493583
We propose a semiparametric multivariate estimator and a multivariate score-type testing procedure under a perturbed multivariate fractional process. The estimator is based on the periodogram and uses a local Whittle criterion function which is generalised by an additional constant to capture...
Persistent link: https://www.econbiz.de/10014247836
Persistent link: https://www.econbiz.de/10013260145
The paper considers likelihood ratio (LR) tests of stationarity, common trends and cointegration for multivariate time … power gains of the bootstrap LR test are significantly larger for testing the hypothesis of common trends and cointegration … trends in the volatility of the US dollar exchange rate against european and asian/pacific currencies …
Persistent link: https://www.econbiz.de/10013125622
We provide an overidentification test for a nonparametric treatment model where individuals are allowed to select into treatment based on unobserved gains. Our test can be used to test the validity of instruments in a framework with essential heterogeneity (Imbens and Angrist 1994). The...
Persistent link: https://www.econbiz.de/10010491120