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Data · dataset · 2015

Comparison of asymptotic confidence sets for regression in small samples

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In case of small samples, asymptotic confidence sets may be inaccurate, with their actual coverage probability far from a nominal confidence level.

Description

In a single framework, we consider four popular asymptotic methods of confidence estimation. These methods are based on model linearization, F-test, likelihood ratio test, and nonparametric bootstrapping procedure.

Next, we apply each of these methods to derive three types of confidence sets: confidence intervals, confidence regions, and pointwise confidence bands. Finally, to estimate the actual coverage of these confidence sets, we conduct a simulation study on three regression problems. A linear model and nonlinear Hill and Gompertz models are tested in conditions of different sample size and experimental noise.

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The simulation study comprises calculation of the actual coverage of confidence sets over pseudo-experimental datasets for each model. For confidence intervals, such metrics as width and simultaneous coverage are also considered. Our comparison shows that the F-test and linearization methods are the most suitable for the construction of confidence intervals, the F-test – for confidence regions and the linearization – for pointwise confidence bands.

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Topics

Stated by source
Biological sciences · Mathematics
From keywords
Cancer · Genetics · Medicine & Health
Inferred from text
Simulation 75%

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Provenance · 1 source records, 13 field assertions
SourceKeyLast seenRaw
DataCite10.6084/m9.figshare.145626511 d agoJSON v1
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concepts[field].local:field:medicine-healthmapping · DataCitevocabulary-mapper@1.0.0keywords['Medicine']
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