Sebastian Banert

In pull request #1166, argument caching for proximal operators was deactivated, since lists are not hashable. In order to avoid performance regressions, this should be reintroduced for scalar stepsizes. The...

Decomposition of the total variation into functionals with proximals

2

The total variation can be expressed as the composition of the `odl.L1Norm` with the `odl.Gradient` operator. Since its proximal cannot be calculated in closed form, primal-dual solvers are required, which...

MAINT: Skip the check for theta <= 1 in the PDHG

2

DOC: Update the PDHG docstring to latest research. The Chambolle-Pock method converges even for $\theta > 1$, so the check that requires the contrary (and aborts with an error otherwise)...