The normal distribution is a concept in statistics that assumes all values are distributed in the same pattern. It requires symmetry and consistent proportions in the distribution of values. Normal ...

Diagonal covariance means that points are oriented along x or y axis I think this is not accurate. Diagonal covariance means that the x and y variables are independent (and thus the ellipses ...

Abstract: Data-driven approaches have been widely used in the field of traction system and equipment fault diagnosis. However, limited training samples can cause data-driven models to face the dilemma ...

ABSTRACT: This paper considers efficient set mathematics for the case where the covariance matrix of asset returns is assumed known but ex ante the vector of expected returns is replaced by an ...

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Normal distribution, also known as Gaussian distribution, is a fundamental concept in statistics that is used to describe the probability distribution of a continuous random variable. In simple terms, ...

The Francis era in Roman Catholicism is a good example of how the abnormal and even extraordinary can come to feel, with enough repetition, old hat and status quo. The wildness of the last decade is ...

School of Electric Power Engineering, South China University of Technology, Guangzhou, China In order to enhance self-monitoring and self-diagnosis capabilities in smart distribution networks, this ...