Hi.
As far as I know, sparse data is not mean-centered.
I don't know the poster of the answer, but I don't think the claim is true.
Anyway, our documentation doesn't seem to be sufficient :-/
Best,
Andy
On 01/12/2013 06:19 PM, Neva Cherniavsky wrote:
Hello,
I'm using RandomizedPCA to get the
Hello,
I'm using RandomizedPCA to get the first few principal components of a
large sparse matrix. However, the matrix isn't mean-centered to begin
with. If I call RandomizedPCA with the full version of the matrix, the
function will mean-center it before running the SVD. What happens with a
spa
