Regularised rank quasi-likelihood estimation for generalised additive models

Hannah E. Correia and Asheber Abebe

Journal of Nonparametric Statistics, 2021, vol. 33, issue 1, 101-117

Abstract: Generalised additive models (GAMs) provide flexible models for a wide array of data sources. In the past, improvements of GAM estimation have focused on the smoothers used in the local scoring algorithm used for estimation, but poor prediction for non-Gaussian data motivates the need for robust estimation of GAMs. In this paper, rank-based estimation, as a robust and efficient alternative to the likelihood-based estimation of GAMs, is proposed. It is shown that rank GAM estimators can be obtained through iteratively reweighted likelihood-based GAM estimation which we call the iterated regularised rank quasi-likelihood (IRRQL). Simulation experiments support the use of rank-based GAM estimation for heavy-tailed or contaminated sources of data.

Date: 2021
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DOI: 10.1080/10485252.2021.1921176

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