Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/25035
Title: Renewable quantile regression for streaming data sets
Authors: Yu, K
Jiang, R
Keywords: Quantile regression;streaming data;variable selection;online updating;optimisation algorithm
Issue Date: 2022
Publisher: Elsevier
Citation: Yu, K (2022) 'Renewable quantile regression for streaming data sets', Neurocomputing, 0(0), pp.1-30
Abstract: Online updating is an important statistical method for the analysis of big data arriving in streams due to its ability to break the storage barrier and the computational barrier under certain cir cumstances. The quantile regression, as a widely used regression model in many fields, faces challenges in model fitting and variable selection with big data arriving in streams. Chen et al. (2019, Annals of Statistics) has proposed a quantile regression method for streaming data, but a strong additional condition is required. In this paper, renewable optimized objective functions for regression parameter estimation and variable selection in a quantile regression are proposed. The proposed methods are illustrated using current data and the summary statistics of historical data. Theoretically, the proposed statistics are shown to have the same asymptotic distributions as the standard version computed on an entire data stream with the data batches pooled into one data set, without additional condition. Both simulations and data analysis are conducted to illustrate the finite sample performance of the proposed methods.
URI: http://bura.brunel.ac.uk/handle/2438/25035
ISSN: 0925-2312
Appears in Collections:Dept of Mathematics Embargoed Research Papers

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