How to write constraint such the sum of the binary variable is 1.

Answered

Ranjan Acharyya

September 01, 2021 21:00 Edited

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I am trying to implement the algorithm in the paper

https://www.cmu.edu/epp/patents/events/aaai21/aaaicontent/papers/training-integer-valued-neural-networks-with-mixed-integer-programming.pdf

As per equation 16 I need to put a constraint that sum of O^k is 1. The question is how can I implement that constraint?

If I just do self.m.addConstr(sum(O)==1)

I get the error TypeError: 'Var' object is not iterable

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• Official comment

  

  Simranjit Kaur

  • Gurobi Staff

  June 23, 2025 02:48 Edited

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  Ranjan Acharyya

  September 01, 2021 22:56

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  The object was not iterable and hence the error. Problem is resolved.

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