CPLEX cpxcb BARRIER: Difference between revisions
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{{Part Of Manual|title=the CPLEX Manual|link=[[CPLEX|CPLEX]]}} | {{Part Of Manual|title=the CPLEX Manual|link=[[CPLEX|CPLEX]]}} | ||
CPLEX_Barrier callback. | |||
Called from TOMLAB /CPLEX when solving linear problems using the barrier algorithm. | Called from TOMLAB /CPLEX when solving linear problems using the barrier algorithm. | ||
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This callback is enabled by setting ''callback''(5) = 1 in the call to ''cplex.m'', or ''Prob.MIP.callback''(5) = 1 if using tomRun('cplex',...). | This callback is enabled by setting ''callback''(5) = 1 in the call to ''cplex.m'', or ''Prob.MIP.callback''(5) = 1 if using tomRun('cplex',...). | ||
cpxcb_BARRIER is called with one argument, the cpxCBInfo progress information vector. | |||
Contents of cpxCBInfo vector: | Contents of cpxCBInfo vector: | ||
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</pre> | </pre> | ||
By returning a nonzero value from | By returning a nonzero value from cpxcb_BARRIER, 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. | If modifying this file, it is recommended to make a copy of it which is placed before the original file in the MATLAB path. | ||
Latest revision as of 05:54, 17 August 2011
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This page is part of the CPLEX Manual. See CPLEX. |
CPLEX_Barrier callback.
Called from TOMLAB /CPLEX when solving linear problems using the barrier algorithm.
This callback is enabled by setting callback(5) = 1 in the call to cplex.m, or Prob.MIP.callback(5) = 1 if using tomRun('cplex',...).
cpxcb_BARRIER is called with one argument, the cpxCBInfo progress information vector.
Contents of cpxCBInfo vector:
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
By returning a nonzero value from cpxcb_BARRIER, 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.
