Support pinv

[alewis]

We need np.linalg.pinv, in both the backends and on Tensor.

[virajone]

@alewis Hey I'm new to the project and would love to contribute. Given this seems like a good first issue, can you please provide the scope for this one ?

[alewis]

Sure, happy to have you. The goal would be to add the numpy function pinv https://numpy.org/doc/stable/reference/generated/numpy.linalg.pinv.html to the library via each of the various backends. The first step is to go to tensornetwork/backends/abstract_backend.py and to add it there, using the other existing functions as guides, and then to the tests in the same folder. Why don't you give that a shot and we'll sync up?

[virajone]

@alewis Thanks for the details. Seems fairly straightforward. I will get back to you once I'm done with the first one. Can you assign me the issue in the meantime ?

[alewis]

Done!

[virajone]

@alewis , Added a PR #850 for adding PINV to abstract_backend. Your feedback would be really appreciated! I shall also start working on adding it to the other backends and eventually the tensor, per your approval.

[virajone]

@alewis I have made the requested changes. In case you will be approving the #850 , shall I proceed to adding PINV to other backends ?

[raunakbhupal]

Hi. I'm new over here.
If this issue is still open then can I add PINV to other backends?
@alewis Also could you mention in which all backends should I add PINV?

[alewis]

That’d be great!

…

On Thu, Apr 1, 2021 at 8:51 AM Raunak Bhupal ***@***.***> wrote: Hi. I'm new over here. If this issue is still open then can I add PINV to other backends? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#844 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAINHBUTOAS4U57RS2AJTGDTGRT5VANCNFSM4R5W7LBA> .

[raunakbhupal]

Since I'm new and this is my first time
Could you please direct me to which other backends shall I make those changes?