What is the purpose of libraries like Pyomo and Google OR tools?Advantages generic cplex callback within branch-and-cutGurobi's “Out of memory” error without exhausting the RAM?Termination Criteria of Solver in PyomoHow to set a maximum time to improve a solution with Pyomo and CBCNLP solvers in pyomo other than ipopt?Warm start CPLEX using google or-toolsComparison of Algebraic modelling languages and general programming languagesProblems Installing APOPT in PyomoUnderstanding the AMPL Solver LIbrary within Pyomo
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What is the purpose of libraries like Pyomo and Google OR tools?
Advantages generic cplex callback within branch-and-cutGurobi's “Out of memory” error without exhausting the RAM?Termination Criteria of Solver in PyomoHow to set a maximum time to improve a solution with Pyomo and CBCNLP solvers in pyomo other than ipopt?Warm start CPLEX using google or-toolsComparison of Algebraic modelling languages and general programming languagesProblems Installing APOPT in PyomoUnderstanding the AMPL Solver LIbrary within Pyomo
$begingroup$
I'm new to the OR world, and trying to learn the various tools available. I originally thought that Pyomo and Google OR tools were open source alternatives to commercial solvers like Gurobi or CPLEX.
But now I'm discovering more and more that they are used more as a sort of interface to those solvers, not as an alternative to them.
Why is this the case? What purpose do these libraries serve? Gurobi for example already has a Python interface, why would I need Pyomo to interface with it?
cplex pyomo gurobi
asked 9 hours ago
Alex KinmanAlex Kinman
1643 bronze badges
New contributor
Alex Kinman is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
$begingroup$
I'm new to the OR world, and trying to learn the various tools available. I originally thought that Pyomo and Google OR tools were open source alternatives to commercial solvers like Gurobi or CPLEX.
But now I'm discovering more and more that they are used more as a sort of interface to those solvers, not as an alternative to them.
Why is this the case? What purpose do these libraries serve? Gurobi for example already has a Python interface, why would I need Pyomo to interface with it?
cplex pyomo gurobi
asked 9 hours ago
Alex KinmanAlex Kinman
1643 bronze badges
New contributor
Alex Kinman is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
5
$begingroup$
You don't need Pyomo to interface with Gurobi from Python. But Pyomo lets you easily switch among several solvers without having to reenter the model for each solver.
$endgroup$
– Mark L. Stone
8 hours ago
add a comment |
$begingroup$
I'm new to the OR world, and trying to learn the various tools available. I originally thought that Pyomo and Google OR tools were open source alternatives to commercial solvers like Gurobi or CPLEX.
But now I'm discovering more and more that they are used more as a sort of interface to those solvers, not as an alternative to them.
Why is this the case? What purpose do these libraries serve? Gurobi for example already has a Python interface, why would I need Pyomo to interface with it?
cplex pyomo gurobi
asked 9 hours ago
Alex KinmanAlex Kinman
1643 bronze badges
New contributor
Alex Kinman is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
I'm new to the OR world, and trying to learn the various tools available. I originally thought that Pyomo and Google OR tools were open source alternatives to commercial solvers like Gurobi or CPLEX.
But now I'm discovering more and more that they are used more as a sort of interface to those solvers, not as an alternative to them.
Why is this the case? What purpose do these libraries serve? Gurobi for example already has a Python interface, why would I need Pyomo to interface with it?
cplex pyomo gurobi
cplex pyomo gurobi
asked 9 hours ago
Alex KinmanAlex Kinman
1643 bronze badges
New contributor
Alex Kinman is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 9 hours ago
Alex KinmanAlex Kinman
1643 bronze badges
New contributor
Alex Kinman is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 9 hours ago
Alex KinmanAlex Kinman
1643 bronze badges
New contributor
Alex Kinman is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 9 hours ago
Alex KinmanAlex Kinman
1643 bronze badges
asked 9 hours ago
Alex KinmanAlex Kinman
1643 bronze badges
1643 bronze badges
New contributor
Alex Kinman is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Alex Kinman is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
5
$begingroup$
You don't need Pyomo to interface with Gurobi from Python. But Pyomo lets you easily switch among several solvers without having to reenter the model for each solver.
$endgroup$
– Mark L. Stone
8 hours ago
add a comment |
5
$begingroup$
You don't need Pyomo to interface with Gurobi from Python. But Pyomo lets you easily switch among several solvers without having to reenter the model for each solver.
$endgroup$
– Mark L. Stone
8 hours ago
5
5
$begingroup$
You don't need Pyomo to interface with Gurobi from Python. But Pyomo lets you easily switch among several solvers without having to reenter the model for each solver.
$endgroup$
– Mark L. Stone
8 hours ago
$begingroup$
You don't need Pyomo to interface with Gurobi from Python. But Pyomo lets you easily switch among several solvers without having to reenter the model for each solver.
$endgroup$
– Mark L. Stone
8 hours ago
add a comment |
2 Answers
2
active
oldest
votes
$begingroup$
Pyomo is an algebraic modeling language and allows users to easily represent optimization problems at a high-level (by defining variables, constraints, objective, etc.). Pyomo then provides interfaces to a variety of optimization solvers including Gurobi and CPLEX. This allows an optimization model to be formulated once and then a user can experiment with using different solvers to actually solve the problem. Pyomo also provides several modeling extensions for representing high-level modeling constructs (e.g. differential equations or disjunctions) and general implementations of transformations for converting these constructs to a form that off-the-shelf optimization solvers can solve.
answered 8 hours ago
Bethany NicholsonBethany Nicholson
2461 silver badge4 bronze badges
$endgroup$
add a comment |
$begingroup$
Different solvers have their own interfaces (for example Cplex studio by IBM). You can use the specific syntax for those IDE or interfaces to input your model and then use the solver to solve it. Although the logic behind them all is the same but those languages or syntaxes are usually differing from one solver to the other. If you need to solve your problem by using more than one solver you will need a general form of problem which can be converted to the solver specific problems. This conversion is done using some Algebraic Modeling Languages (AML). Pyomo is an AML that extends Python to include objects for mathematical modeling. After generating your problem in Pyomo you will be able to use many solvers to solve it. Some of those are glpk(open source), CPLEX, Gurobi, BARON and many more.
When you use interfaces of specific solver in python you may won't have the ability to solve the same problem with other solvers.
Google created OR-Tools in C++, but you can also use it with Python, Java, or C#. So Pyomo and Google OR-tools are packages that can be called by python (in case of Google or: some other platforms) and are including many classes (for example ConcreteModel() in Pyomo) with many attributes (for example Objective in ConcreteModel class).
answered 8 hours ago
Oguz ToragayOguz Toragay
3,1943 silver badges30 bronze badges
$endgroup$
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
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votes
$begingroup$
Pyomo is an algebraic modeling language and allows users to easily represent optimization problems at a high-level (by defining variables, constraints, objective, etc.). Pyomo then provides interfaces to a variety of optimization solvers including Gurobi and CPLEX. This allows an optimization model to be formulated once and then a user can experiment with using different solvers to actually solve the problem. Pyomo also provides several modeling extensions for representing high-level modeling constructs (e.g. differential equations or disjunctions) and general implementations of transformations for converting these constructs to a form that off-the-shelf optimization solvers can solve.
answered 8 hours ago
Bethany NicholsonBethany Nicholson
2461 silver badge4 bronze badges
$endgroup$
add a comment |
$begingroup$
Pyomo is an algebraic modeling language and allows users to easily represent optimization problems at a high-level (by defining variables, constraints, objective, etc.). Pyomo then provides interfaces to a variety of optimization solvers including Gurobi and CPLEX. This allows an optimization model to be formulated once and then a user can experiment with using different solvers to actually solve the problem. Pyomo also provides several modeling extensions for representing high-level modeling constructs (e.g. differential equations or disjunctions) and general implementations of transformations for converting these constructs to a form that off-the-shelf optimization solvers can solve.
answered 8 hours ago
Bethany NicholsonBethany Nicholson
2461 silver badge4 bronze badges
$endgroup$
add a comment |
$begingroup$
Pyomo is an algebraic modeling language and allows users to easily represent optimization problems at a high-level (by defining variables, constraints, objective, etc.). Pyomo then provides interfaces to a variety of optimization solvers including Gurobi and CPLEX. This allows an optimization model to be formulated once and then a user can experiment with using different solvers to actually solve the problem. Pyomo also provides several modeling extensions for representing high-level modeling constructs (e.g. differential equations or disjunctions) and general implementations of transformations for converting these constructs to a form that off-the-shelf optimization solvers can solve.
answered 8 hours ago
Bethany NicholsonBethany Nicholson
2461 silver badge4 bronze badges
$endgroup$
Pyomo is an algebraic modeling language and allows users to easily represent optimization problems at a high-level (by defining variables, constraints, objective, etc.). Pyomo then provides interfaces to a variety of optimization solvers including Gurobi and CPLEX. This allows an optimization model to be formulated once and then a user can experiment with using different solvers to actually solve the problem. Pyomo also provides several modeling extensions for representing high-level modeling constructs (e.g. differential equations or disjunctions) and general implementations of transformations for converting these constructs to a form that off-the-shelf optimization solvers can solve.
answered 8 hours ago
Bethany NicholsonBethany Nicholson
2461 silver badge4 bronze badges
answered 8 hours ago
Bethany NicholsonBethany Nicholson
2461 silver badge4 bronze badges
answered 8 hours ago
Bethany NicholsonBethany Nicholson
2461 silver badge4 bronze badges
answered 8 hours ago
Bethany NicholsonBethany Nicholson
2461 silver badge4 bronze badges
2461 silver badge4 bronze badges
add a comment |
add a comment |
$begingroup$
Different solvers have their own interfaces (for example Cplex studio by IBM). You can use the specific syntax for those IDE or interfaces to input your model and then use the solver to solve it. Although the logic behind them all is the same but those languages or syntaxes are usually differing from one solver to the other. If you need to solve your problem by using more than one solver you will need a general form of problem which can be converted to the solver specific problems. This conversion is done using some Algebraic Modeling Languages (AML). Pyomo is an AML that extends Python to include objects for mathematical modeling. After generating your problem in Pyomo you will be able to use many solvers to solve it. Some of those are glpk(open source), CPLEX, Gurobi, BARON and many more.
When you use interfaces of specific solver in python you may won't have the ability to solve the same problem with other solvers.
Google created OR-Tools in C++, but you can also use it with Python, Java, or C#. So Pyomo and Google OR-tools are packages that can be called by python (in case of Google or: some other platforms) and are including many classes (for example ConcreteModel() in Pyomo) with many attributes (for example Objective in ConcreteModel class).
answered 8 hours ago
Oguz ToragayOguz Toragay
3,1943 silver badges30 bronze badges
$endgroup$
add a comment |
$begingroup$
Different solvers have their own interfaces (for example Cplex studio by IBM). You can use the specific syntax for those IDE or interfaces to input your model and then use the solver to solve it. Although the logic behind them all is the same but those languages or syntaxes are usually differing from one solver to the other. If you need to solve your problem by using more than one solver you will need a general form of problem which can be converted to the solver specific problems. This conversion is done using some Algebraic Modeling Languages (AML). Pyomo is an AML that extends Python to include objects for mathematical modeling. After generating your problem in Pyomo you will be able to use many solvers to solve it. Some of those are glpk(open source), CPLEX, Gurobi, BARON and many more.
When you use interfaces of specific solver in python you may won't have the ability to solve the same problem with other solvers.
Google created OR-Tools in C++, but you can also use it with Python, Java, or C#. So Pyomo and Google OR-tools are packages that can be called by python (in case of Google or: some other platforms) and are including many classes (for example ConcreteModel() in Pyomo) with many attributes (for example Objective in ConcreteModel class).
answered 8 hours ago
Oguz ToragayOguz Toragay
3,1943 silver badges30 bronze badges
$endgroup$
add a comment |
$begingroup$
Different solvers have their own interfaces (for example Cplex studio by IBM). You can use the specific syntax for those IDE or interfaces to input your model and then use the solver to solve it. Although the logic behind them all is the same but those languages or syntaxes are usually differing from one solver to the other. If you need to solve your problem by using more than one solver you will need a general form of problem which can be converted to the solver specific problems. This conversion is done using some Algebraic Modeling Languages (AML). Pyomo is an AML that extends Python to include objects for mathematical modeling. After generating your problem in Pyomo you will be able to use many solvers to solve it. Some of those are glpk(open source), CPLEX, Gurobi, BARON and many more.
When you use interfaces of specific solver in python you may won't have the ability to solve the same problem with other solvers.
Google created OR-Tools in C++, but you can also use it with Python, Java, or C#. So Pyomo and Google OR-tools are packages that can be called by python (in case of Google or: some other platforms) and are including many classes (for example ConcreteModel() in Pyomo) with many attributes (for example Objective in ConcreteModel class).
answered 8 hours ago
Oguz ToragayOguz Toragay
3,1943 silver badges30 bronze badges
$endgroup$
Different solvers have their own interfaces (for example Cplex studio by IBM). You can use the specific syntax for those IDE or interfaces to input your model and then use the solver to solve it. Although the logic behind them all is the same but those languages or syntaxes are usually differing from one solver to the other. If you need to solve your problem by using more than one solver you will need a general form of problem which can be converted to the solver specific problems. This conversion is done using some Algebraic Modeling Languages (AML). Pyomo is an AML that extends Python to include objects for mathematical modeling. After generating your problem in Pyomo you will be able to use many solvers to solve it. Some of those are glpk(open source), CPLEX, Gurobi, BARON and many more.
When you use interfaces of specific solver in python you may won't have the ability to solve the same problem with other solvers.
Google created OR-Tools in C++, but you can also use it with Python, Java, or C#. So Pyomo and Google OR-tools are packages that can be called by python (in case of Google or: some other platforms) and are including many classes (for example ConcreteModel() in Pyomo) with many attributes (for example Objective in ConcreteModel class).
answered 8 hours ago
Oguz ToragayOguz Toragay
3,1943 silver badges30 bronze badges
edited 8 hours ago
answered 8 hours ago
Oguz ToragayOguz Toragay
3,1943 silver badges30 bronze badges
answered 8 hours ago
Oguz ToragayOguz Toragay
3,1943 silver badges30 bronze badges
answered 8 hours ago
Oguz ToragayOguz Toragay
3,1943 silver badges30 bronze badges
3,1943 silver badges30 bronze badges
add a comment |
add a comment |
Alex Kinman is a new contributor. Be nice, and check out our Code of Conduct.
Alex Kinman is a new contributor. Be nice, and check out our Code of Conduct.
Alex Kinman is a new contributor. Be nice, and check out our Code of Conduct.
Alex Kinman is a new contributor. Be nice, and check out our Code of Conduct.
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5
$begingroup$
You don't need Pyomo to interface with Gurobi from Python. But Pyomo lets you easily switch among several solvers without having to reenter the model for each solver.
$endgroup$
– Mark L. Stone
8 hours ago