Matlab关于ARMA模型平稳性检验的问题

来源:百度文库 编辑:神马文学网 时间:2024/04/28 06:41:44
原假设是序列存在单位为根,H=0说明接受原假设,即存在单位根,所以不平稳。

DFARDTEST Augmented Dickey-Fuller unit root test based on AR model with drift.
    Perform an augmented Dickey-Fuller univariate unit root test under the
    assumption that the true underlying process is a zero drift unit root
    process.

H - Logical decision vector. Elements of H = 0 indicate acceptance of the
      null hypothesis
; elements of H = 1 indicate rejection of the null
      hypothesis.