title: Reducing noise in discretized time series.
abstract: We show that applying a noise-reduction algorithm to a discretized time series increases its average error, compared to the original series. We find that adding external noise comparable to the discretization step before noise reduction limits the increase of the average error and improves the estimation of Lyapunov exponents.
authors.affiliation: Departamento de Física, Universidad de Los Andes, Apartado Aéreo 4976, Bogotá, Colombia.
authors.forename: M C
authors.initials: MC
authors.lastname: Cuéllar
authors.forename: P M
authors.initials: PM
authors.lastname: Binder