Emma Innocente

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Latest activity by Emma Innocente
  • Emma Innocente created a post,

    model.addVars

    Answered

    Hello,  I have two lists of tuples, as follows :  L = [('BE212', 'BE352', 0, 0), ('BE212', 'BE211', 0, 0), ('BE242', 'BE100', 0, 0), ('BE236', 'BE232', 0, 0), ('BE212', 'BE343', 0, 0)]R = [('BE310'...

  • Emma Innocente commented,

    Each tuple in R corresponds to a driver, with the first element in each tuple being the origin of the driver and the second element being the destination of the driver.  Each tuple in L corresponds...

  • Emma Innocente commented,

    Thank you very much ! This is clearer ! I followed your advice and proceeded as follows :  RL = [(r, l) for r in R for l in L]with gp.Env() as env, gp.Model(env=env) as model: x = model.addVars(le...

  • Emma Innocente commented,

    Thank you for your answer. The only issue I have is that I won't be able to refer to my variables using the tuples but I would have to use the 15th elemnt for example.  In order to refer to my vari...

  • Emma Innocente commented,

    Hi Ronald,  Could you give me an example ?  Suppose I have two lists of tuples :  R = [('e', 'e'), ('e', 'e'), ('a', 'a'), ('e', 'e'), ('d', 'd')]L = [('d', 'd'), ('e', 'e'), ('d', 'd'), ('c', 'c')...

  • Emma Innocente commented,

    Thank you very much for your answer !  Would this be the correct way to do it ?  for r in R: x = model.addVar(r, vtype=gp.GRB.BINARY)

  • Emma Innocente commented,

    Hi Ronald,  Thanks a lot for your answer.  I realize I wasn't very clear in my previous message.  I have a list of tuples :  R = [('b', 'b', 2), ('b', 'b', 2), ('e', 'e', 2), ('d', 'd', 2), ('c', '...

  • Emma Innocente created a post,

    Gurobipy - Model.addVars()

    Answered

    Hi,  Modeling with gurobipy, is there a way to create variables with the same keys (multiple variables with the same indexes) ?  Thank you for your answer ! Emma

  • Emma Innocente commented,

    Hi Riley !  Thank you very much for your help ! I managed to prevent memory issues by paying attention to how I recorded data !  I would like to model the following (modeled using PULP) constraint ...

  • Emma Innocente created a post,

    Modelling with gurobipy

    Awaiting user input

    Hi,  I would like to model the following constraint with gurobipy :  time_R = [2 for i in full_R]time_L = [(0,2) for i in full_L] w_L = [[0, 1, 2, 3], [4, 5, 6, 7], [8, 9, 10, 11], [12, 13, 14, 15]...