Der vorliegende Beitrag untersucht, welchen Einfluss die Umstellung des Saisonbereinigungsverfahrens von dem ASA-II-Verfahren auf die X-13ARIMA-SEATS-Methode auf die Prognosekraft der ifo Indikatoren hat.

Daily evapotranspiration is a major component in crops water consumption management plans. Consequently, forecasting of daily evapotranspiration is the keystone of any effective water resources management plans in fragile environment similar to the Nile Delta region. The estimation of daily...

Die Prognose von makroökonomischen Zeitreihen steht häufig vor dem Problem, dass die verwendeten Indikatoren und die Zielzeitreihe in verschiedenen Frequenzen vorliegen. So ist das Bruttoinlandsprodukt nur auf Quartalsbasis verfügbar, während die meisten Indikatoren, wie z.B. das ifo...

Time series analysis used to investigate the stratospheric ozone formation and decomposition processes. Different time series methods are applied to detect the reason for extreme high ozone concentrations for each season. Data was convert into seasonal component and frequency domain, the latter...

The seasonal dependency or seasonality is a general component of the time series pattern that can be examined via correlograms, where the correlogram displays graphical and numerical information in an autocorrelation function. This paper discusses the use of an autocorrelation function in the...

Milk production and procurement in Poland and UE-15 show a clear seasonal fluctuations which are determined by the distribution of calving and feeding regimes. The seasonal fluctuations are transferred on the consequent stages of the food chain and also have got numerous microeconomic...