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A novel simulation-based methodology is proposed to test the validity of a set of marginal time series models, where the dependence structure between the time series is taken "directly" from the observed data. The procedure is useful when one wants to summarize the test results for several time...
Persistent link: https://www.econbiz.de/10010250513
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
is discussed in terms of the leading example of bootstrap-based hypothesis testing in the well-known first order auto … conditions and their implications for possible improvements in terms of (empirical) size and power for bootstrap-based testing …, when compared to asymptotic testing, are illustrated by simulations. Following this, an overview of selected recent …
Persistent link: https://www.econbiz.de/10012835479
The asymmetric moving average model (asMA) is extended to allow forasymmetric quadratic conditional heteroskedasticity (asQGARCH). Theasymmetric parametrization of the conditional variance encompassesthe quadratic GARCH model of Sentana (1995). We introduce a framework fortesting asymmetries in...
Persistent link: https://www.econbiz.de/10011303289
In this paper, we present a new time series model, whichdescribes self-exciting threshold autoregressive (SETAR) nonlinearityand seasonality simultaneously. The model is termed multiplicativeseasonal SETAR (SEASETAR). It can be viewed as a special case of ageneral non-multiplicativeSETAR model...
Persistent link: https://www.econbiz.de/10011304390
on testing only. The authors aim to maximize power to detect non-linearities and, simultaneously, they purport avoiding …
Persistent link: https://www.econbiz.de/10011596878
We propose a nonparametric approach to the estimation and testing of structural change in time series regression models …
Persistent link: https://www.econbiz.de/10009003125
convergence, power of the tests and possible distortions to unit root testing which might appear due to the presence of … bilinearity. It is concluded that the two-step testing procedure suggested here (the first step for the linear unit root and the …
Persistent link: https://www.econbiz.de/10008794578
(Panel) Smooth Transition Regressions substantially gained in popularity due to their flexibility in modeling regression coefficients as homogeneous or heterogeneous functions of transition variables. In the estimation process, however, researchers typically face a trade-off in the sense that a...
Persistent link: https://www.econbiz.de/10011750362
We develop and evaluate sequential testing tools for a class of nonparametric tests for predictability of financial … where a researcher conducts testing as new observations arrive. Throughout, we elaborate on both two-sided and one …-sided testing, focusing on linear monitoring boundaries that are continuations of horizontal lines corresponding to retrospective …
Persistent link: https://www.econbiz.de/10005086555