中文摘要：

提出了基于时间序列的混合预测模型，即将改进的移动平均预测模型MA和灰色预测模型GM（1，1）结合起来。该混合预测模型产生的预测准确率比较高，有效地提高了网格中调度组件的调度效率。

英文摘要：

A new mixed forecasting model PMA-GM for grid resource performance is introduced, which joins MA and GM （ 1, 1 ） together. The mixed forecasting model can provide an accurate forecast for grid resource performance and also efficiently support scheduling task for the grid.