Assertion: component's data | /r/HasProperty | standardized
Facets:
Source sentences:
text: If data are standardized such that each gene is centered to zero average expression level, the principal components are normalized eigenvectors of the covariance matrix of the genes and ordered according to how much of the variation present in the data they contain.
text: Moreover, provided that data are standardized so that samples have zero average expression, the eigengenes are eigenvectors to the covariance matrix of the samples.
text: Since the data are standardized, the data vectors are of unit length ( z a ⋅ z a = 1 {\displaystyle \mathbf {z} _{a}\cdot \mathbf