Lazy constraint callbacks in R?

回答済み

Velibor Misic

• 2019年04月29日 02:00

Hi there,

 

I was just curious if there is a way to add lazy constraint callbacks to problems that are created/solved using the Gurobi R interface?

 

Thank you in advance for your help!

Velibor

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  Jakob Schelbert

  • 2019年04月29日 08:20

  

  

  Hi Velibor,

  As far as I know, the R-API does not permit adding lazy constraints. This is also true for the Matlab-API - both are more "matrix based" interfaces compared to the other APIs.

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  Gwyneth Butera

  Gurobi Staff

  • 2019年05月21日 21:18

  As a note of clarification, while you can't use the callback, you can mark linear constraints as lazy in the R and MATLAB APIs via the 'lazy' attribute on a linear constraint. 

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  Marcos Freitas

  • 2020年12月09日 04:15

  

  

  Does anyone know if it's still not possible?

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  Eli Towle

  Gurobi Staff

  • 2020年12月09日 04:41

  Callback functions are still not supported in the MATLAB and R interfaces. To add lazy constraints in these APIs, you can use Gwyneth's approach of setting the Lazy attributes of linear constraints.

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