Saeed Abdolmaleki
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Activity overview
Latest activity by Saeed Abdolmaleki-
Saeed Abdolmaleki commented,
I appreciate your support RyutaI think this is the right way for handling fixed integers on the node
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Saeed Abdolmaleki created a post,
Feature Request: Access to Fixed Integer Variables in Gurobi Nodes
Dear Gurobi Team,I hope this message finds you well.I am conducting academic research focused on developing an exact heuristic that integrates with the Gurobi solver. As part of this work, I requir...
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Saeed Abdolmaleki commented,
Hi Ryuta,Thanks for replying to my message. The Idea ultimately led me to use SCIP, during my heuristic solution I need to get access to the fixed integer variables up to the called node. Do you ha...
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Saeed Abdolmaleki created a post,
Getting the decision variable's local bounds within the B&B tree
AnsweredHiI need to get access the local upper and lower bound of a variable in a branch and bound tree. similar to the method on SCIP:scip.getLbLocal()
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Saeed Abdolmaleki commented,
Hi Riley,thank you for your response, First I tried using CPLEX, and although the cplex was unable to provide me the fixed integer variables over the parent's node, I simply used get.local_lower/up...
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Saeed Abdolmaleki created a post,
Prunning the tree
AnsweredHelloI am workig on an exact method which embeds with MILP. The idea is to set a heuristic solution into the branch and bound tree. I was able to update the incumbent to a very good point, however ...
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Saeed Abdolmaleki created a post,
Non-Convex Objective Function
AnsweredHi Gurobi Experts,I have supply chain configuration problem, where the objective function has a sqrt form like below: I previously used Conic Constraint; However I wanted it to know does Gurobi hav...
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Saeed Abdolmaleki commented,
Additionally, there is another issue: for mid-sized instances, the callback-based Benders implementation tends to produce the same optimal solution as Gurobi's default solver. However, as the probl...
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Saeed Abdolmaleki created a post,
Analysis of Benders Decomposition Cuts over Gurobi Logs
Hi scientists, While I was trying to understand the internal logic of using the callback method to generate cuts for a Facility Location Problem—without relying on Gomory cuts or heuristic methods ...
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Saeed Abdolmaleki created a post,
Benders Strategy
AnsweredHello Gurobi TeamI was trying BendersStrategy which has been sugested by gurobibot on my Complimantory Optimization problem. the given Error Key:Could you guide me on it----------------------------...