On the weighted multivariate Wilcoxon rank regression estimate

Weihua Zhou and Jin Wang

Statistics & Probability Letters, 2011, vol. 81, issue 6, 704-713

Abstract: Zhou (2010) introduced a multivariate Wilcoxon regression estimate which possesses some nice properties: computational ease, asymptotic normality and high efficiency. However, it is sensitive to the leverage points. To circumvent this problem, we propose a weighted multivariate Wilcoxon regression estimate. Under some regularity conditions, the asymptotic normality is established. We further study the robustness of the proposed estimate through the influence function. By properly choosing the weight functions, our results show that the corresponding estimate can have bounded influence function on both response and covariates.

Keywords: Multivariate; regression; Wilcoxon; Rank; estimate; Influence; function (search for similar items in EconPapers)
Date: 2011
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