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3 Setting XA Options
All XA control parameters are possible to set from Matlab.
3.1 Setting options using the xaControl structure
The parameters can be set as subfields in the
Prob.MIP.xaControl structure. The following example shows
how to set a limit on the maximum number of iterations.
Prob = mipAssign(...) % Setup problem, see help mipAssign for more information
Prob.MIP.xaControl.ITERATION = 20000; % Setting maximum number of iterations
The maximum number of iterations can also be done through the TOMLAB
parameter
MaxIter:
Prob.optParam.MaxIter = 20000;
In the cases where a solver specific parameter has a corresponding
TOMLAB general parameter, the latter is used only if the user has not
given the solver specific parameter.
A complete description of the available XA parameters can be found
in Section
4.3.
Irreducible Infeasible Sets (IIS) can be found with TOMLAB /XA.
There are two options available to the user. The first one delivers
the infeasible rows from the last simplex tableau. The second one
will try to find a minimal number of constraints that need to be
removed or corrected to make the model feasible. There may be more
sets that the one delivered. The inputs and outputs are explained in Section
4.2.
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TOMLAB
