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tests to accommodate hidden dependence and non-stationarities involving heteroskedasticity, thereby uncoupling these tests … heteroskedasticity in the series. Related extensions are provided for testing cross-correlation at various lags in bivariate time series …
Persistent link: https://www.econbiz.de/10012243279
The Newey and West (1987) estimator has become the standard way to estimate a heteroskedasticity and autocorrelation …
Persistent link: https://www.econbiz.de/10013097469
We develop a new test for threshold-type regime changes in the risk exposures in portfolios with a large number of financial assets whose returns exhibit an approximate factor structure. Unlike existing procedures to detect discrete shifts in factor models, our test is robust to regime-specific...
Persistent link: https://www.econbiz.de/10012853517
The literature on heteroskedasticity and autocorrelation robust (HAR) inference is extensive but its usefulness relies …
Persistent link: https://www.econbiz.de/10013293025
robust to both conditional and unconditional heteroskedasticity of a quite general and unknown form in the shocks. We show … pivotal asymptotic null distributions in the presence of heteroskedasticity, but that the corresponding tests based on the … wild bootstrap principle do. An heteroskedasticity-robust Wald test, based around a sandwich estimator of the variance, is …
Persistent link: https://www.econbiz.de/10009743847
Conditional heteroskedasticity can be exploited to identify the structural vector autoregressions (SVAR) but the …
Persistent link: https://www.econbiz.de/10011817166
parameters are identified via Markov-switching heteroskedasticity. In such a model, restrictions that are just-identifying in the … distributions. As an empirical example, monetary models are compared using heteroskedasticity as an additional device for …
Persistent link: https://www.econbiz.de/10011771740
We consider robust inference for an autoregressive parameter in a stationary autoregressive model with GARCH innovations when estimation is based on least squares estimation. As the innovations exhibit GARCH, they are by construction heavy-tailed with some tail index κ. The rate of consistency...
Persistent link: https://www.econbiz.de/10012946453
periodic heteroskedasticity are proposed …
Persistent link: https://www.econbiz.de/10014067033
Persistent link: https://www.econbiz.de/10012425349