Journal
JOURNAL OF NONPARAMETRIC STATISTICS
Volume -, Issue -, Pages -Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/10485252.2023.2277260
Keywords
Bootstrap; boundary effects; coverage probabilities; k-factor; smoothing spline
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This paper presents a likelihood-based approach for constructing tolerance intervals in nonparametric regression models. Extensive coverage studies demonstrate the good performance of the proposed methods. The proposed tolerance intervals are calculated and interpreted for analyses involving fertility dataset and triceps measurement dataset.
Tolerance intervals in regression allow the user to quantify, with a specified degree of confidence, bounds for a specified proportion of the sampled population when conditioned on a set of covariate values. While methods are available for tolerance intervals in fully-parametric regression settings, the construction of tolerance intervals for nonparametric regression models has been treated in a limited capacity. This paper fills this gap and develops likelihood-based approaches for the construction of pointwise one-sided and two-sided tolerance intervals for nonparametric regression models. A numerical approach is also presented for constructing simultaneous tolerance intervals. An appealing facet of this work is that the resulting methodology is consistent with what is done for fully-parametric regression tolerance intervals. Extensive coverage studies are presented, which demonstrate very good performance of the proposed methods. The proposed tolerance intervals are calculated and interpreted for analyses involving a fertility dataset and a triceps measurement dataset.
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