Extreme Quantile Estimation for Autoregressive Models

Deyuan Li and Huixia Judy Wang

Journal of Business & Economic Statistics, 2019, vol. 37, issue 4, 661-670

Abstract: A quantile autoregresive model is a useful extension of classical autoregresive models as it can capture the influences of conditioning variables on the location, scale, and shape of the response distribution. However, at the extreme tails, standard quantile autoregression estimator is often unstable due to data sparsity. In this article, assuming quantile autoregresive models, we develop a new estimator for extreme conditional quantiles of time series data based on extreme value theory. We build the connection between the second-order conditions for the autoregression coefficients and for the conditional quantile functions, and establish the asymptotic properties of the proposed estimator. The finite sample performance of the proposed method is illustrated through a simulation study and the analysis of U.S. retail gasoline price.

Date: 2019
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DOI: 10.1080/07350015.2017.1408469

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