Autori
Di Fonzo, TommasoMarini, MarcoTitolo
Reconciliation of systems of time series according to a growth rates preservation principlePeriodico
Statistical methods & applications : Journal of the Italian Statistical SocietyAnno:
2015 - Volume:
24 - Fascicolo:
4 - Pagina iniziale:
651 - Pagina finale:
669We propose new simultaneous and two-step procedures for reconciling systems of time series subject to temporal and contemporaneous constraints according to a growth rates preservation (GRP) principle. The techniques exploit the analytic gradient and Hessian of the GRP objective function, making full use of all the derivative information at disposal. We apply the new GRP procedures to two systems of economic series, and compare the results with those of reconciliation procedures based on the proportional first differences (PFD) principle, widely used by data-producing agencies. Our experiments show that (1) the nonlinear GRP problem can be efficiently solved through an interior-point optimization algorithm, and (2) GRP-based procedures preserve better the growth rates than PFD solutions, especially for series with high temporal discrepancy and high volatility.
SICI: 1618-2510(2015)24:4<651:ROSOTS>2.0.ZU;2-B
Esportazione dati in Refworks (solo per utenti abilitati)
Record salvabile in Zotero
Biblioteche ACNP che possiedono il periodico