English, Article edition: Adaptive pointwise estimation in time-inhomogeneous conditional heteroscedasticity models P. Č íž ek; ...

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Bookmark: http://trove.nla.gov.au/version/107118
Physical Description
  • article
Language
  • English

Edition details

Title
  • Adaptive pointwise estimation in time-inhomogeneous conditional heteroscedasticity models
Author
  • P. &​Ccaron
  • í&​zcaron
  • ek
  • W. Härdle
  • V. Spokoiny
Physical Description
  • article
Notes
  • This paper offers a new method for estimation and forecasting of the volatility of financial time series when the stationarity assumption is violated. Our general, local parametric approach particularly applies to general varying-coefficient parametric models, such as GARCH, whose coefficients may arbitrarily vary with time. Global parametric, smooth transition and change-point models are special cases. The method is based on an adaptive pointwise selection of the largest interval of homogeneity with a given right-end point by a local change-point analysis. We construct locally adaptive estimates that can perform this task and investigate them both from the theoretical point of view and by Monte Carlo simulations. In the particular case of GARCH estimation, the proposed method is applied to stock-index series and is shown to outperform the standard parametric GARCH model. Copyright © 2009 The Author(s). Journal compilation © Royal Economic Society 2009
  • RePEc:ect:emjrnl:v:12:y:2009:i:2:p:248-271
Language
  • English
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