Leaf nodes of the Branch-and-Bound tree

[Pouya Barahimi]

I am trying to implement the logic-based Benders Decomposition. Therefore, as part of the algorithm, I need to have the values assigned to variables in all the leaf nodes the Branch-and-Bound tree. Is there a method implemented in the Gurobi interface for Java that I can use?

[Renan Garcia]

You should use a callback. For documentation on the GRBCallback class, please refer to http://www.gurobi.com/documentation/6.0/refman/java_grbcallback.html. In particular, you'll probably use the GRBCallback.getSolution() or GRBCallback.getNodeRel() methods. For an example with callbacks, see http://www.gurobi.com/documentation/6.0/examples/callback_java.html.

On Oct 9, 2015, at 4:31 PM, Pouya Barahimi <pbar...@gmail.com> wrote:

I am trying to implement the logic-based Benders Decomposition. Therefore, as part of the algorithm, I need to have the values assigned to variables in all the leaf nodes the Branch-and-Bound tree. Is there a method implemented in the Gurobi interface for Java that I can use?

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