Sequential Quantile Prediction of Time Series

Details Sequential Quantile Prediction of Time Series Sequential Quantile Prediction of Time Series

2009-08-18

arxiv.org/abs/0908.2503v2

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Scientific paper

Motivated by a broad range of potential applications, we address the quantile prediction problem of real-valued time series. We present a sequential quantile forecasting model based on the combination of a set of elementary nearest neighbor-type predictors called "experts" and show its consistency under a minimum of conditions. Our approach builds on the methodology developed in recent years for prediction of individual sequences and exploits the quantile structure as a minimizer of the so-called pinball loss function. We perform an in-depth analysis of real-world data sets and show that this nonparametric strategy generally outperforms standard quantile prediction methods

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