【摘要】 本文研究在未知有界误差（ＵＢＢＥ：ＵｎｋｎｏｗｎＢｕｔＢｏｕｎｄｅｄＥｒｒｏｒ）假定下考虑模型应用域的回归问题，提出了最佳预测参数的概念，给出了确定最佳预测参数的基本准则和方法。实际案例研究结果显示，同不考虑模型应用域的回归方法相比，新方法能够提高模型的预测精度。更多还原

【Abstract】 On the assumption of UBBE (Unknown But Bounded Error), the problem of regression in consideration of the region of model application is studied in this paper The concept of the optimal forecasting param eters is propose The criterion and algorithms for the detirmination of these parameters are given. It is shown by the result of a practical application that forecasting accuracy can be improved by the new approachas compared with old ones.更多还原