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Operations Research

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For questions referring to an Application Programming Interface (API) that performs or used to support Operations Research or OR-related functions. Do not use this tag for a general problem with a non-OR related API.

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I want to solve an optimization problem using the CPLEX API in C++. After solving the model, I then want to resolve it using a different objective function. For that purpose, I learned the functions <...
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Here is part of a ".bas" file given by HiGHS using serial dual simplex method to solve an LP problem: HiGHS v1 Valid # Columns 57471 3 1 1 3 3 1 1 3 3 1 1 3 1 3 3 1 ... What does the number &...
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Suppose we have a feasible LP problem in its standard form. From Ax=b we can directly determine some of its variables and thus we can reduce the problem. For example, from two constraints: x+y+z=2 and ...
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The Rust programming language is gaining popularity. As the title says, I wonder if state-of-the-art, say MILP, solvers will eventually release APIs for the Rust programming language. Solvers such as ...
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I have a C API program uploaded here in Dropbox that is an LP. Here is the problem: When I compile the C file it gives me "1017 Not available for mixed-integer problems" while the problem is ...
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My question is kind of related to this 2015 post at Stackoverflow. About Simplex method tableau pivoting in Linear Programming -- this is proving to be difficult in GLPK.. I am using Linux, GLPK 5.0 ...
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I am using the Google API Distance Matrix (mode 'driving') in an optimization program. If I run the program twice a day (e.g. in the morning and in the afternoon), I sometimes get different solutions. ...
XLF's user avatar
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Does anyone know if there is a list of available function APIs for Mosek Fusion APIs? Namely, what functions are available, their arguments list and meaning, what they do. Something similar to UNIX ...
inf's user avatar
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I want to deploy my OR model (python, pyomo) as an Rest API (using Flask) that too on Azure Kubernet. All I have came across so far are ways to do the same for ML models, which can be uploaded as ...
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I am trying to use CPXaddusercuts to add cutting planes, which have not been violated yet but are likely to be violated as we go down the branch & bound tree, to the list (pool) of constraints. As ...
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Did anyone have experiences with Pyomo and GAMS as solver? I had looked into the pyomo documentation (GAMSShell Solver) and in the CPLEX Manuals, but doesnt find the correct syntax. My Code looks like:...
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The state-of-art solvers like CPLEX or Gurobi and some of the open-source solvers have had the different APIs (like Python, C/C++, Java, etc.) in which users could write their MP model in own ...
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When working with Gurobi, CPLEX and the like the user can choose between many different APIs, for example Python, C++, R, Java, Matlab or C. Some of these API are more efficient than others. For ...
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