Custom branching heuristic and cuts

[Siddhartha Jain]

Hi,

I'm trying to implement a custom branching heuristic in Gurobi.
However there doesn't seem to be any function I can call which can add
the cuts Gurobi can generate to my model. There also doesn't seem be
any set of callbacks that I can use to implement the custom branching
heuristic.

Is it possible to have a custom branching heuristic along with the
cuts Gurobi generates?

Thanks
--Sid

[Siddhartha Jain]

To be more specific, while it seems I can use setSolution to specify
values for particular variables, there doesn't seem to be any
mechanism to change the bounds on the variable during the branch and
bound process using callbacks.

[Ed Rothberg]

Correct, we don't currently provide any means to choose specific
branching variables.

Ed