QCP duals

Answered

Gleb Belov

September 14, 2021 05:32

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Hi,

when retrieving duals of linear and quadratic constraints, I noticed that methods

GRBgetdblattr(element)

interpret the indices as the indices in the subset of only quadratic constraints, or, if I want a linear-constraint dual, similar. For a given constraint in the model, how can I determine whether it is linear or quadratic and, possibly, its index to be used? Or, what is an efficient way to obtain duals for all constraints (linear and quadratic)?

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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?.
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  Gleb Belov

  September 14, 2021 06:57

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  Oh I think every constraint type has its own pool, there is no overall ordering of constraints. Resolved then.

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