中文说明：
gm(1,1)灰色预测模型，可以进行各种预测。短期的电力负荷预测尤其的好。也可以进行中长期的预测，但是效果没有短期的好
English Description：
Gm (1, 1) grey forecasting model, can undertake a variety of predictions.Short-term power load forecasting is especially good.Also can undertake medium and long term forecast, but there is no good short-term effect