Alternative methods for the seasonal adjustment of economic data are described that operate in the time domain and in the frequency domain. The time-domain method, which employs a classical comb filter, mimics the effects of the model-based procedures of the SEATS–TRAMO and STAMP programs. The...

Danmarks Nationalbank has in November 2006 started to publish five seasonally adjusted financial time series. The series chosen for seasonal adjustment are monthly series for currency in circulation, the money stock measures M1 and M2 and the MFI sector's lending to households and to...

Unobserved components time series models decompose a time series into a trend, a season, a cycle, an irregular disturbance, and possibly other components. These models have been successfully applied to many economic time series. The standard assumption of a linear model, often appropriate after...