Nested sum using quicksum()

Answered

Pavithra Sreekumar

• August 31, 2021 14:06

Hi everyone!

I have a doubt regarding the quicksum() function and how I could use it for a nested sum equation like the following - 

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• Official comment

  

  Simranjit Kaur

  Gurobi Staff

  • December 06, 2024 00:26

  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 why not try our AI Gurobot?.
• 

  Alison Cozad

  Gurobi Staff

  • September 01, 2021 14:18

  Here are a few good resources to get you started with nested summations:

  • Python I: Introduction to Modeling with Python - Gurobi. This is your best place to start.  It includes a video tutorial and examples with jupyter notebooks for you to follow.  It also includes an example of using nested summations.
  • netflow.py: This is a Gurobi example of how to do nested summations in two different ways: (a) using quicksum and (b) using tupledict.sum()
  • quicksum() documentation
  • Nexted quicksum function? – Gurobi Support Portal

   

  If you are still having a hard time, can you show me what you have tried?

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