Sameer Agarwal 9d02b76dce An implementation of SubsetPreconditioner. ...

The key idea being, use some subset of the rows of the Jacobian
as the preconditioner.

This CL only implements the preconditioner assuming that the row
selection has already been done. How the rows are selected will be
left to the user based on their knowledge of the problem.

A follow up CL will hook this preconditioner into the rest of the
solver.

Change-Id: I3e18dc57811116534e9ddf35d7b154bcce496d3b

2018-02-21 13:58:45 -08:00

..

ceres

An implementation of SubsetPreconditioner.

2018-02-21 13:58:45 -08:00