Multiobjective with MLinExpr

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Justin Luke

• 2020年04月24日 02:00

Currently, multiobjectives only support having subsequent objective terms (after the primary term) as LinExpr().

Will MLinExpr() objective terms be supported?

Thanks!

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  Simranjit Kaur

  Gurobi Staff

  • 2024年12月06日 00:47

  This post is more than three years old. Some information may not be up to date. For current information, please check the Gurobi Documentation or Knowledge Base. If you need more help, please create a new post in the community forum. Or why not try our AI Gurobot?.
• 

  Richard Oberdieck

  Gurobi Staff

  • 2020年04月24日 06:46

  Hi,

  thank you for bringing this to our attention. I was able to reproduce this problem with the following code snippet:

  import gurobipy as gp
  model = gp.Model()
  x = model.addMVar(5)
  y = model.addVar()
  
  # This works
  model.setObjectiveN(y,0)
  model.setObjectiveN(y,1)
  
  # This does not work
  model.setObjectiveN(x[0],0)
  model.setObjectiveN(y,1)
  
  # This does not work
  model.setObjectiveN(y,0)
  model.setObjectiveN(x[0],1

  We'll have a look at it internally. Was this also your experience?

  Thanks

  Richard

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• 

  Justin Luke

  • 2020年04月30日 03:06

  

  

  

  Hi Richard,

  Yes, that is!  Thank you and the team for looking into this.  Looking forward to a fix.

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