shallow-linear-net's People
shallow-linear-net's Issues
Condition number not as expected
Dear Benjamin,
I have a question regarding the generation of the matrix A. You want to generate badly conditioned matrices and write that the matrix will have condition 1/A_condition_number
using:
Atrue = np.linspace(1, A_condition_number, ydim
).reshape(-1, 1) * np.random.rand(ydim, xdim)
When I ran this and computed np.linalg.cond(Atrue)
I did not get a bad condition however (I got a condition in the order of 1e1
even though A_condition_number=1e-10
).
If I run the same with logspace instead (see below), then I get much higher condition numbers:
Atrue = np.logspace(1, np.log10(A_condition_number), ydim).reshape(-1, 1) * np.random.rand(ydim, xdim)
Do you know why this is happening?
Cheers,
Fabian
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