I am trying to implement a complex knapsack into CPLEX and it is currently taking a long time to solve optimally
Is there a way of adding domain knowledge to the branching method in order to speed it up?

I am using the python 3.7 cplex API and can post the optimisation problem if that helps

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Mark Towers
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#DecisionOptimization

You can handle branching yourself, by adding a callback (Cplex.set_callback()) with the context mask set to the "branching" variable and a function that takes a context argument and calls make_branch() on it for each branch to be created.

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Paul Rubin
Professor Emeritus
Michigan State University
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