中文说明：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，灰色预测是一种对含有不确定因素的系统进行预测的方法。
English Description：
Grey theory holds that the behavior of the system is a reflection of, the data is complex, but it is ordered, is an overall function. Grey number generation, is to find out from the clutter ... Meanwhile, is generating data models by grey, instead of the original data model, therefore, grey is a method for prediction of systems with uncertainties.