Nonparametric adaptive estimation of linear functionals for low frequency observed Lévy processes

Abstract

For a Lévy process X having finite variation on compact sets and finite first moments, µ( dx) = xv( dx) is a finite signed measure which completely describes the jump dynamics. We construct kernel estimators for linear functionals of µ and provide rates of convergence under regularity assumptions. Moreover, we consider adaptive estimation via model selection and propose a new strategy for the data driven choice of the smoothing parameter.Statistics of stochastic processes, Low frequency observed Lévy processes, Nonparametric statistics, Adaptive estimation, Model selection with unknown variance