Curve fitting and jump detection on nonparametric regression with missing data

Qianyi Li, Jianbo Li, Yongran Cheng and Riquan Zhang

Journal of Applied Statistics, 2023, vol. 50, issue 4, 963-983

Abstract: In this paper, by virtual of the inverse probability weighted technique, we considered the jump-preserving estimation on the nonparametric regression models with missing data on response variable. First, we used local piecewise-linear expansion respectively with left and right kernel to approximate the unknown regression function. Second, we obtained the left- and right-limit estimation of regression function at each observed points and then determinated the final estimators by residual sums of squares. Third, we presented the convergence rate of estimators and the residual sums of squares. Finally, we illustrated the performance of our proposed method through some simulation studies and a conjunctivitis example from The Affiliated Hospital of Hangzhou Normal University.

Date: 2023
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DOI: 10.1080/02664763.2021.2004580

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