ModOpt Implement FAASTA

The FAASTA algorithm allows us to perform a FISTA algorithm in the analysis formulation. In our case we could see if the FAASTA still performs well with the new restarting options.

Since the FISTA with an orthogonal transform is way faster than the Condat-Vu, we are going to see now if this holds true even when we have to compute an extra inner iteration.

Apr 11 '19 15:04 zaccharieramzi

@zaccharieramzi are you planning a PR for this issue?

Apr 26 '19 12:04 sfarrens

Yes I am. I am currently working on the best way to package it but it's basically done. Do you want to have a WIP PR to see if the direction is statisfying?

Apr 26 '19 13:04 zaccharieramzi

@sfarrens even with the trimming (#50 ), the FAASTA is still way slower than Condat for reconstruction problems with undecimated wavelets. Should we still have it in Modopt?

May 09 '19 08:05 zaccharieramzi

@zaccharieramzi I think having a diverse set of reconstruction algorithms would be useful regardless. So if you have already implemented it then feel free to open a PR.

May 09 '19 08:05 sfarrens

Ok I will package it in a PR.

May 09 '19 08:05 zaccharieramzi

@zaccharieramzi are you still planning a PR for this algorithm?

Apr 30 '20 12:04 sfarrens

Not at the moment. Do you still want to keep this open? I will probably do it at some point but I don't think I can find the time right now.

Apr 30 '20 13:04 zaccharieramzi

We can keep it open, I just wanted to check on the status. :)

Apr 30 '20 13:04 sfarrens