Machine Learning, Dimensionality Reduction, Eigenvectors, Algorithms, Mathematics.
matrix of the mean centered data!!! Now, assume you have mapped your n×p data X where n = no. of rows and p = no. of columns to a n × k space Z where k = no. of principal axes (eigenvectors) of your choosing (k<p) using the p × k eigenvector space V- Z = XV If we want to get our original data back