However, when the order of ARMA model is very high, to compare every candidate model's criterion value is computationally infeasible.

但是，当模型的阶数很高时，无法计算并比较每一个备选模型的准则函数值。

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Objective To compare the value of MR diffusion weighted imaging (DWI), perfusion weighted imaging (PWI), and CT perfusion imaging (CTPI) in evaluating a model of acute cerebral venous occlusion.

目的对比磁共振扩散加权成像（DWI）、灌注加权成像（PWI）和CT灌注成像（CTPI）评价急性脑静脉闭塞模型的价值。

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