A Nonlinear Algorithm for Seasonal Adjustment in Multiplicative Component Decompositions
نویسنده
چکیده
We propose a new model-based, nonlinear method for seasonally adjusting time series in a multiplicative components model. The method seeks to reduce the bias inherent in linear modelbased approaches, while at the same time preserving the flexibility of parametric methods. We discuss the problem of bias and the concept of recovery, and demonstrate the favorable properties of the proposed algorithm on several synthetic series.
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