Elias: Created page with "{{Part Of Manual|title=the CPLEX Manual|link=CPLEX}} CPLEX Primal simplex callback Called from TOMLAB /CPLEX when solving linear problems using the primal simplex alg..."

2011-08-16T15:12:18Z

Created page with "{{Part Of Manual|title=the CPLEX Manual|link=CPLEX}} CPLEX Primal simplex callback Called from TOMLAB /CPLEX when solving linear problems using the primal simplex alg..."

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{{Part Of Manual|title=the CPLEX Manual|link=[[CPLEX|CPLEX]]}}
CPLEX Primal simplex callback

Called from TOMLAB /CPLEX when solving linear problems using the primal simplex algorithm.

This callback is enabled by setting ''callback''(1) = 1 in the call to ''cplex.m'', or ''P rob.M I P.callback''(1) = 1 if using tomRun('cplex',...).

cpxcb PRIM is called with one argument, the cpxCBInfo progress information vector.

Contents of cpxCBInfo vector:

<pre>
i cpxCBInfo(i) - Value
-------------------------------------------------------------
1 PRIMAL_OBJ - primal objective value
2 DUAL_OBJ - dual objective value
3 PRIMAL_INFMEAS - measure of primal infeasibility
4 DUAL_INFMEAS - measure of dual infeasibility
5 PRIMAL_FEAS - 1 if primal feasible, 0 if not
6 DUAL_FEAS - 1 if dual feasible, 0 if not
7 ITCOUNT - iteration count
8 CROSSOVER_PPUSH - primal push crossover itn. count
9 CROSSOVER_PEXCH - primal exchange crossover itn. count
10 CROSSOVER_DPUSH - dual push crossover itn. count
11 CROSSOVER_DEXCH - dual exchange crossover itn. count
</pre>

By returning a nonzero value from cpxcb PRIM, the user can terminate the optimization.

If modifying this file, it is recommended to make a copy of it which is placed before the original file in the MATLAB path.

CPLEX cpxcb PRIM - Revision history

Elias: Created page with "{{Part Of Manual|title=the CPLEX Manual|link=CPLEX}} CPLEX Primal simplex callback Called from TOMLAB /CPLEX when solving linear problems using the primal simplex alg..."