The Optimal Use of Provisional Data in Forecasting With Dynamic Models
动态模型预测中初步数据的最优利用AI 解读 ↓
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动态模型预测中初步数据的最优利用AI 解读 ↓
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Timely economic forecasts by means of dynamic models rely on updated time series, the last figure(s) of which are provisional and will be typically subjected to a number of revisions. A general approach to the efficient use of provisional observations in dynamic models is presented, based on the state-space methodology and the Kalman filter. Suitable adaptations are introduced, chiefly involving the measurement equations. Some applications are carried out for Italy, concerning (a) the monthly index of industrial production and (b) a small dynamic simultaneous-equation model of the aggregate economy. Kalman-filter estimates and predictions are compared with more traditional procedures.