Constraints in Gurobi

回答済み

Shahrzad Valizadeh

2024年07月07日 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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  Simranjit Kaur

  • Gurobi Staff

  2026年11月13日 01:22

  This post is more than two 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 try Gurobot, our chatbot interface offering instant, expert-level support.
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  Riley Clement

  • Gurobi Staff

  2024年07月08日 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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