Tanmoy Das
Data Scientist, currently final year in PhD at Dalhousie University. Working on a resource optimization problem
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Tanmoy Dasさんが投稿を作成しました:
How to accurately calculate reduced cost when generating one column in column generation?
回答済みHello good people, I am working on a variant of VRP & solving it using Column Generation. The objective function of the pricing problem is my reduced cost (RC) of each route/sequence. My initial ...
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Tanmoy Dasさんがコメントを作成しました:
Hi, Not the best way, but maybe you can extract each scenario using m.SingleScenarioModel(), and then optimize all of them to retrieve all solutions for each scenario. I am trying the below as well:
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Tanmoy Dasさんがコメントを作成しました:
Appreciate it. I will aim for that.
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Tanmoy Dasさんが投稿を作成しました:
How to use non-defaults solution algorithm in Gurobi?
回答済みHello, I am writing a MIP model in Gurobipy. As I understand from documentation that Gurobi by default uses B&C algorithm to solve a MIP problem. How can I use another solution algorithm (if any ot...
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Tanmoy Dasさんがコメントを作成しました:
I want to draw the linechart of iteration vs runtime & iteration vs % gap kinda similar to the below figure
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Tanmoy Dasさんがコメントを作成しました:
thank you. I applied your suggestion to the model.
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Tanmoy Dasさんが投稿を作成しました:
How to print objective values, runtime of each iteration?
回答済みHello, I need to print values of objective for each iteration (not just two iterations as shown below). I think callback function could be useful. But, cant find the correct syntax. Note: it's a MI...
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Tanmoy Dasさんがコメントを作成しました:
I also want to get the objective values (two objectives in my moo problem) in each iteration. Callback function gives me some ideas. I know my model went through 19 simplex iterations. I need the v...
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Tanmoy Dasさんが投稿を作成しました:
How to add m.ModelSense for multiobjective optimization?
回答済みHi, I have two objectives, one to maximize another one to minimize. How to tell the model that obj1 is maximization and obj2 is minimization? The below ModelSense will consider both objectives as m...
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Tanmoy Dasさんが投稿を作成しました:
How to model constraint to send only when facility is open?
回答済みHi, How can I implement a constraint so that resources from facility is sent to customer only when that facility is open? select is a binary variable to send resource r from station s. deploy is a...