Discussions

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  How to Constrain Subsets of an Assignment Matrix Idiomatically?

  TBulka81 asked Dec 21, 2023 in Q&A · Unanswered

  

  

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  HiGHS solver bindings

  dirkschumacher started Sep 5, 2022 in General

  

  

  

  

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  How write a constraint once there is a variable used as the index?

  Arash-72 asked Apr 4, 2023 in Q&A · Unanswered

  

  

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  The Queens Problem and functional indexing

  sbmack started Apr 11, 2023 in Show and tell

  

  

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  Sparse Matrix Constraints with multi-index

  optimizationnoob started Mar 14, 2023 in General

  

  

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  Filtering In Constraints MILPModel

  datadrivensupplychain asked Jul 12, 2022 in Q&A · Unanswered

  

  

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  Dev Version of MIPModel?

  datadrivensupplychain asked Jul 8, 2022 in Q&A · Unanswered

  

  

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  Model Formulation: Gurobi v. OMPR

  sbmack started Apr 10, 2022 in Show and tell

  

  

  

  

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  Working version of ROI.plugin.gurobi - ?

  snestler asked Jun 26, 2020 in Q&A · Unanswered

  

  

  

  

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  Gurobi Solver- Recent Experience?

  datadrivensupplychain asked Apr 1, 2022 in Q&A · Unanswered

  

  

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  More on Sparse Variable/Constraint Generation

  sbmack asked Feb 3, 2022 in Q&A · Answered

  

  

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  Sparse model generation using lists

  sbmack started Jan 30, 2022 in Ideas

  

  

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  Update summary of the ompr development space?

  sbmack started Jan 11, 2022 in General

  

  

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  {ompr} 1.0 release + mini roadmap

  dirkschumacher started Jan 26, 2022 in General

  

  

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  Shiny app - sending ompr console prints to Shiny app

  datadrivensupplychain asked Jan 19, 2022 in Q&A · Unanswered

  

  

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  Awesome Package!

  mattmills49 started Sep 9, 2021 in General

  

  

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  Precision - Digits

  karthikkommalapati asked Jun 7, 2020 in Q&A · Unanswered

  

  

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  mymodel not found

  Lotte10 asked Nov 30, 2021 in Q&A · Unanswered

  

  

  

  

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  Adding a constraint using sum_expr and an index that is dependent on outside variables.

  sarahjean0659 asked Mar 23, 2021 in Q&A · Unanswered

  

  

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  Sparse vector generation example (MPS row, column, value format) using tidyverse

  sbmack started Jan 6, 2022 in Ideas

  

  

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  Modeling error for sure

  lucazav asked May 28, 2021 in Q&A · Answered

  

  

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  Found: workaround for array multiplication in constraints & objfcn using MILPModel

  datadrivensupplychain started Dec 30, 2021 in Show and tell

  

  

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  Discrete Optimization using vector of positive integers

  dmaupin12 asked Oct 8, 2021 in Q&A · Unanswered

  

  

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  ompr::add_constraint(.): Adding a simple char-constraint (?), ERROR: The expression contains a variable that is not part of the model

  Martin-Grub asked Apr 29, 2021 in Q&A · Unanswered

  

  

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  Help with MILP model

  ConorRobinson78 asked Mar 17, 2021 in Q&A · Unanswered

  

  

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