Constraints in Gurobi

Answered

Shahrzad Valizadeh

July 07, 2024 08:56

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i have the following variable of:

b = {}
    for m in M:
        for demand_index in range(100):
            for t in range(tt):
                b1["O+", "1", m, demand_index, t] = model.addVar(vtype=GRB.INTEGER, name=f'b_{"O+"}_{"1"}_{m}_{demand_index}_{t}')

in which M = list(range(41, 0, -1))

Does the following constraint correspond to the attached constraint for different demand values?
term = gp.quicksum(b["O+", "1", m, demand_index, t] * weight[m] for m in M for demand_index in range(10))

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  Riley Clement

  • Gurobi Staff

  July 08, 2024 04:06

  Hi Shahrzad,

  Your term variable is currently being assigned the following (which is not a constraint, as discussed on another post):

  \[\sum_{demand=0}^{9}\sum_{m=1}^{41}b_{O+, 1, m, demand, t}weight_m\]

  Also note you can set M = range(1, 42) which is a bit cleaner.  Hope this helps.

  - Riley

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