摘要
组合预测的关键是确定加权系数，本文提出两种计算最优加权系数的方法并对之加以比较研究，通过实例说明其应用情况。
The key of conbining forecasts is to determine the weightes of combining forecasts. In this paper two kinds of methods of determining the optimal weightes are preseted and their applications are illustrated by atual examples
