摘要
The paper provides a modelling method of The GM(1,1) model wiht step function,and also a gradual approximation method of parameter esrimaion.
The paper provides a modelling method of The GM(1,1) model wiht step function,and also a gradual approximation method of parameter esrimaion.
出处
《统计研究》
CSSCI
北大核心
1996年第2期59-62,共4页
Statistical Research