Description Usage Arguments Details Value
This is the update of the low rank mean in the regularized factor analysis. The low rank mean is not regularized, so this is the exact same update as in Sun et al (2012).
1 | update_A(Y, sig_diag, k)
|
Y |
A matrix. This is the |
sig_diag |
A vector of length |
k |
An integer. The rank of the mean matrix. |
The update is just a truncated SVD of a scaled data matrix, where the scaling depends on the current estimates of the variances of the columns.
A_new
The update of the mean matrix.
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