Dessaisonalisation d'un tableau avec contraintes linéaires: Application aux flux financiers canadiens

Canadian financial flows represent a detailed set of time series, satisfying a number of accounting identities. When seasonal adjustments are made using the X‐11‐ARIMA program, the original linear constraints no longer hold. This article introduces a procedure that recovers consistency for seasonally adjusted financial flows. A weighted least squares minimization method is used to change as little as possible the individually seasonally adjusted financial flow series. Results pertaining to a restricted set of Canadian financial flows are presented.