灰色理论认为系统的行为现象尽管是朦胧的，数据是复杂的，但它毕竟是有序的，是有整体功能的。灰数的生成，就是从杂乱中寻找出规律。同时，灰色理论建立的是生成数据模型，不是原始数据模型，因此，灰色预测的数据是通过生成数据的gm(1,1)模型所得到的预测值的逆处理结果。

-Grey system theory is that the behavior of the phenomenon, albeit hazy, data are complex, but still it is orderly, there is a whole function. Gray number generation is to find out from the clutter in the law. Meanwhile, Gray is the theory of generating the data model, not the original data model, so the gray prediction data by generating data of the gm (1,1) model predicted values ​ ​ obtained by the inverse of the results.