A typical gurobi log can have a section where it shows the range of coefficients. Something like:
Coefficient statistics: Matrix range [1e+00, 6e+01] Objective range [5e+01, 9e+01] Bounds range [1e+00, 1e+00] RHS range [2e+04, 2e+04]
I’ve been looking around the docplex package and so far, I’ve only found the
print_information method of the
Model class which only shows general statistics about the model such as number and type of variables and constraints.
Is there a way to display the range of coefficients in docplex log?
even from docplex you can get access to the cplex python API. See example in SO for sensitivity analysis at https://stackoverflow.com/questions/62475139/sensitivity-analysis-in-docplex
Plus before the solve see
« When the value of this parameter is set to level 2, CPX_DATACHECK_ASSIST, CPLEX turns on both data consistency checking and modeling assistance. At this level, CPLEX issues warnings at the start of the optimization about disproportionate values (too large, too small) in coefficients, bounds, and righthand sides (RHS). «
that can if data check set to 2 spot numerical problems before solve
Answered by Alex Fleischer on January 1, 2022
1 Asked on September 1, 2020
1 Asked on July 27, 2020 by betty
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