基于周期项方法选择的季节性时序预测

根据每个单步预测序列各自具有的特征，通过周期项重构把多步预测转化为单步预测，提出一种预测方法选择策略。为每个单步预测序列选择一个最合适的预测方法，利用选择的方法建模预测周期项，结合灰色预测模型对趋势项的预测值，建立季节性时间序列整体预测模型。实验结果表明，该模型能克服周期项多步预测的缺点，具有较高的预测精度。

Seasonal Time Series Forecasting Based on Seasonality Method Selection

The seasonality of seasonal time series is reconstructed to transform the multi-step ahead forecasting into a single-step forecasting.According to the characteristics of every single-step forecasting time series,a forecasting selection approach is presented.As for every single-step forecasting,most proper forecasting method comes up,then the method selected is used to build a model to predict seasonality.Combining the forecasted trend with the predicted values obtained by a grey forecasting model,the integral seasonal time series forecasting model is established.The comparison of forecasting results show that this model outperforms the multi-step ahead forecasting with better forecasting performance.