In this article the serial dependences between the observed time series and the lagged series, taken into account one-by-one, are graphically analysed by what we have chosen to call the "autodependogram". This tool is a sort of natural nonlinear counterpart of the well-known autocorrelogram used in the linear context. The autodependogram is based on the simple idea of using, instead of autocorrelations at varying time lags, the v2-test statistics applied to convenient contingency tables. The efficacy of this graphical device is confirmed by real and artificial time series and by simulations from certain classes of well-known models, characterized by randomness and by different kinds of linear and nonlinear dependences.
|Titolo:||The autodependogram: a graphical device to investigate serial dependences|
|Autori interni:||PUNZO, ANTONIO|
|Data di pubblicazione:||2012|
|Rivista:||JOURNAL OF TIME SERIES ANALYSIS|
|Appare nelle tipologie:||1.1 Articolo in rivista|