Multiobjective with MLinExpr

Answered

Justin Luke

• April 24, 2020 02:00

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

Will MLinExpr() objective terms be supported?

Thanks!

0

• 

  Richard Oberdieck

  Gurobi Staff

  • April 24, 2020 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

  0
• 

  Justin Luke

  • April 30, 2020 03:06

  

  

  

  Hi Richard,

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

  0

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