Recursive objective function modelling

Answered

Chongqi He

October 29, 2022 16:21

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Hello, I developed a optimization model with Gurobi, but I cannot figure out how to set the recursive objective function as shown in the picture.

Then an error happended like this:

Could you have solutions for this problem?

Thank you in advance!

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• Official comment

  

  Simranjit Kaur

  • Gurobi Staff

  November 16, 2025 23:26

  This post is more than three 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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  Jaromił Najman

  • Gurobi Staff

  November 02, 2022 09:39

  You are calling your function with \(\texttt{s[k]}\) in the recursion, but it should be just \(\texttt{s}\).

  def Q_func(k,s):
      if k == 0:
          return 0
      else:
          return Q_func(k-1,s) + u[k] - s[k]

  Best regards, 
  Jaromił

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  Chongqi He

  November 02, 2022 14:46

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   Ok, thank you!  I've solved it.

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