FATAFE realizes unbiased estimation and its estimated variance approaches to theoretical lower bound if only signal-to-noise ratio is not very low.

只要信噪比不甚低，频点自跟踪频率估计是无偏的且估计方差接近理论下限。

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The relation of deflection variance, vehicle speed and distance between two cars is revealed in example. This paper provides theoretical basi…

通过算例，揭示了简支型桥梁在随机车流作用下挠度响应的方差与车速、车距之间的关系。

youdao

What we did--the core theoretical framework that we had-- was the mean variance theory, which led us to the capital asset pricing model.

我们讲到了投资组合多元化的核心理论框架,即均值-方差模型,之后又讲到了资本资产定价模型

耶鲁公开课 - 金融市场课程节选