Efficiency of the averaged rank-based estimator for first order Sobol index inference

Autor:	Klein, Thierry, Rochet, Paul
Rok vydání:	2023
Předmět:	Mathematics - Statistics Theory
Druh dokumentu:	Working Paper
Popis:	Among the many estimators of first order Sobol indices that have been proposed in the literature, the so-called rank-based estimator is arguably the simplest to implement. This estimator can be viewed as the empirical auto-correlation of the response variable sample obtained upon reordering the data by increasing values of the inputs. This simple idea can be extended to higher lags of autocorrelation, thus providing several competing estimators of the same parameter. We show that these estimators can be combined in a simple manner to achieve the theoretical variance efficiency bound asymptotically.
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2306.05842 Zobrazit plný text záznamu View this record from Arxiv