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  A Seasonal Adjustment Principle and a Seasonal Adjustment
    Method Derived From this Principle
 by 
Ekkehart Schlicht 
Journal of the
    American Statistical Association 1981, 76(374), 374-378 
 
Abstract
The decomposition of a given time series into trend, seasonal component, and
irregular component is formulated as a minimization problem. The trend is chosen
such that it is as smooth as possible; the seasonal component is chosen such
that it exhibits a seasonal pattern as stable as possible; and the trend and
seasonal components are jointly chosen such that the given time series is
explained as well as possible by these two components; that is, the irregular
component is minimized. 
  
The so-called "Hodrick-Prescott Filter" is covered as a special case 
 
 
Keywords: seasonal adjustment, smoothing, spline, descriptive decomposition, 
Hodrick-Prescott Filter 
 
 
      Article 
 
 
 
 Professor Dr. Ekkehart Schlicht: Veröffentlichungen/Publications 
  
  
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