Since it is hard to specify recursive processes using probabilistic event structures directly, we use a metric approach on probabilistic event structures.

由于直接采用概率事件结构难以刻画递归进程，因此，本文在概率事件结构上采用了一种度量的方法。

youdao

In addition, a state space recursive scheme was developed, so that the dynamic responses can be calculated directly.

此外，建立了一种状态变量的递推计算格式，可以直接计算出动力响应量。

youdao