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I am trying to retrieve the solution of root node relaxation using callbacks in cplex concert c++. I am particularly interested in getting the reduced costs associated with each decision variable. Unfortunately, I could not find a way to retrieve them, and it seems that I can not use the getReducedCost() method inside a callback class. Does someone has a better idea how to get them ?
Below a snap of my callback procedure.
Thanks a lot !
Can someone help ? or provide some useful references ?
You might want to take a look at Daniel's second answer in this thread.
Thank you Paul ! very helpful !