运用经典方法结合参数的先验信息得到了广义一阶自回归模型中自相关系数的收缩估计的闭式表达式,它是通常极大似然估计与先验均值的加权平均,在适当的先验信息下优于原来的估计。
A Shrinkage estimator in closed form is obtained for a general autoregressive parameter by using traditional statistical method with prior information inputted on the parameter. The shrinkage estimator is the weighted average of the usual maximum likelihood estimator and the prior mean, and it is more effective than the original estimator under the suitable prior information.