Estimation of integrated squared density derivatives from a contaminated sample

A. Delaigle and I. Gijbels

Journal of the Royal Statistical Society Series B, 2002, vol. 64, issue 4, 869-886

Abstract: Summary. We propose a kernel estimator of integrated squared density derivatives, from a sample that has been contaminated by random noise. We derive asymptotic expressions for the bias and the variance of the estimator and show that the squared bias term dominates the variance term. This coincides with results that are available for non‐contaminated observations. We then discuss the selection of the bandwidth parameter when estimating integrated squared density derivatives based on contaminated data. We propose a data‐driven bandwidth selection procedure of the plug‐in type and investigate its finite sample performance via a simulation study.

Date: 2002
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Citations: View citations in EconPapers (23)

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