In this paper, we provide a nonparametric estimator of the distribution of bivariate censored lifetimes, in a model where the two censoring variables di er only through an additional observed variable. This situation is motivated by a particular application to insurance, where the supplementary variable corresponds to the age di erence between two individuals. Asymptotic results for our estimat...

Quantile regression provides a more thorough view of the effect of covariates on a response. Nonparametric quantile regression has become a viable alternative to avoid restrictive parametric assumption. The problem of variable selection for quantile regression is challenging, since important variables can influence various quantiles in different ways. We tackle the problem via regularization in...

objectives: the aim of this study was to assess and compare the characteristics of commonly used initial archwires by their load deflection graphs. materials and methods : this study tested three wire designs namely copper nickel titanium (cnt), nickel titanium (niti), and multi-strand niti (msnt) archwires engaged in passive self-ligating (psl) brackets, active self-ligating (asl) brackets or ...

Variable importance, interaction measures, and partial dependence plots are important summaries in the interpretation of statistical machine learning models. In this article, we describe new visualization techniques for exploring these model summaries. We construct heatmap graph-based displays showing variable importance jointly, which carefully designed to highlight aspects fit. a matrix-type ...

Supplementary feeding stations, or "vulture restaurants", are common conservation management tools. While a number of studies have investigated the consequences of surplus food on the population dynamics of scavengers, relatively little is known about the effects of such practices at the individual level. Within the long-term monitored breeding population of Canarian Egyptian vultures (Neophron...