时序残差GM(1,1)模型

GM(1,1) Model of Time Sequence Error

顾及时序残差对灰色ｘ（０）－ＧＭ（１，１）模型精度的影响，提出时序残差ε（０）ｔ－ＧＭ（１，１）模型，并利用时序残差ε（０）ｔ－ＧＭ（１，１）模型和ｘ（０）－ＧＭ（１，１）模型联合进行精度检验和预测，能较好地提高模型精度和预测精度，实例说明是有效的。

ε (0) t GM(1,1) model of time sequence error has been put forward according to the influence of x (0) GM(1,1) model precision by time sequence error, ε (0) t GM(1,1) and x (0) GM(1,1) models are used to test model precision and forecast. An example is employed to show that the precision of model and prediction could be raised effectively.