In this paper we describe a methodology for enriching an income dataset with information on expenditures using a semi-parametric imputation technique. Engel curves are first estimated semi-parametrically on household budget data. We then show how the technique can be used to impute expenditure...

We study the robustness of block resampling procedures for time series. We first derive a set of formulas to characterize their quantile breakdown point. For the moving block bootstrap and the subsampling, we find a very low quantile breakdown point. A similar robustness problem arises in...