Case Study on the Direct Filter Approach
نویسندگان
چکیده
In practice, signal extraction is based on finite samples X1, ..., XT and, very often, current estimates of the interesting components (t = T ) import: a socalled ‘concurrent’ or ‘real-time’ estimate of the trend or of its turning-points has a strong prospective content, since the future evolution of the time series is likely to be conditioned by this component. Whereas forecasting tools generally emphasize the one-step ahead perspective (at least this is true for model-based approaches such as ARIMA), real-time signal extraction may be used to infer future mid-term dynamics.
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