METHOD AND SYSTEM FOR ANONYMISATION OF TIME SERIES

摘要

The method delivers synthetic time series as an anonymised version of time series (x1 to xE) and comprises an identification (Fb3, Fb4) of K nearest neighbours with a distance calculation law (Eq3, Eq4), and generation (Fb5) of a first version of synthetic time series (xiA(t)) corresponding to a time series (xi) by a combination (Eq6) of the K nearest neighbours. In accordance with the invention, the method comprises an additional anonymisation procedure (Fb6) targeting temporal characteristics of phase (Eq10), of number of measurements (n, ni, nj) and/or of measurement steps (PL, PLA), the procedure carrying out, on a first version of synthetic time series (xiA(t)), a modification of at least one temporal characteristic from at least one temporal characteristic of the same type of one of the K identified nearest neighbour time series, which is selected using a predetermined selection law (Eq9).