TensorKitchen Patch

[sChoiKr]

No description provided.

[PBrdng]

This patch adds a few improvements:

• LFBGS is now working correctly
• We now optimize the relative error $0.5 \cdot \Vert A - X \Vert^2 / \Vert A\Vert^2$ by default, where $X$ is the variable we optimize.
• Repeated code was unified and cleaned up.
• Helper functions were moved to a separate place in the code
• Progress Meter now prints the second phase always if the first phase was printed.

[PBrdng]

Nice: this works well now

a, b, c, d = 100, 50, 20, 200
A = reshape(sum(kron(randn(d), randn(c), randn(b), randn(a)) for _ in 1:5), a, b, c, d);
cpd(A, 5)