However, the parameter model based PSD estimation is used with the assumption that the model order is determined as low as possible through prior knowledge.

而功率谱估计中基于参数模型的方法得到广泛应用，但建模时通常只能根据经验选择一个固定较低的阶数。

youdao

The post-war expansion of university science was based on the assumption that to invest in knowledge was to invest in growth.

ECONOMIST: The knowledge factory

The historic status of private equity and hedge funds as (largely) unregulated arrangements is based on the explicit assumption that their participants have adequate knowledge and negotiating leverage to protect their interests.

FORBES: "Villains" of Financial Crisis Wrestle with Misperceptions