A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

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For questions involving mathematical problems that aim to minimize or maximize some objective function, possibly subject to one or more constraints.
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For questions about mathematical optimization problems involving both continuous and binary or general integer variables.
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For questions related to problems that optimize (i.e., minimize or maximize) a linear objective subject to linear constraints.
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For questions related to the process of converting a real-world problem into a mathematical model. Can include questions related to linearization, logical constraints, tightness of formulations, and s…
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For questions about mathematical optimization problems involving binary or general integer variables.
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For questions asking for references from the literature or textbooks on specific topics.
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For questions related to software designed to solve very general classes of optimization problems to guaranteed optimality.
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Questions related to the commercial solver IBM ILOG CPLEX Optimization Studio.
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For questions related to constraints, i.e. any restriction or relation a set of decision variables has to satisfy.
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For questions about solving Operations Research problems using the Python programming language.
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For questions about optimization over a discrete solution space.
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For questions about mathematical optimization problems involving a nonlinear objective function and/or nonlinear constraints.
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For questions on modeling satisfaction or optimization problems in languages designed for expressing (often high-level) constraints on decision variables.
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For questions related to techniques for converting nonlinear expressions in optimization models into equivalent (or approximately equivalent) linear ones.
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For questions related to the design or implementation of algorithms (exact or heuristic) for solving optimization problems.
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Questions related to the commercial solver Gurobi Optimizer.
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For questions related to convex functions and convex sets, especially as they relate to optimization problems.
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For questions about methods that assign resources to work requests (e.g. processor time to tasks) usually minimizing some cost measure (e.g. makespan).
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For questions related to optimization problems for routing vehicles through a set of nodes, especially the vehicle routing problem (VRP) and its variants.
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For questions about the theoretical runtime needed for solving computational problems, often measured in the size of the input. This includes questions about whether polynomial time algorithms exist, …
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For questions asking for real-world applications of specific concepts.
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For questions related to the Python optimization modeling package Pyomo.
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For questions about constraints that can be expressed in (usually propositional) logic.
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For questions that involve variables than can only take on one of two values, usually 0 or 1.
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Questions related to or-tools, Google's open-source software suite for optimization
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For questions on quadratic programming, methods to solve them and related solvers. Use this tag along with (optimization).
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Questions related to resources (e.g. data, results, code) that can be downloaded freely from the Internet.
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For questions related to algorithms expected to produce good solutions, with no guarantee of optimality, in relatively short computation time.
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For questions related to commercial or open-source computer software used for operations research problems.
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For questions about mathematical models and algorithms for optimizing inventories.
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Questions on algorithms that solve mathematical models by generating columns (variables) in the pricing step during solution on demand.
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For questions about optimization problems in which one or more parameters are stochastic, with known probability distributions or discrete scenarios. The goal is often, but not always, to minimize or …
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For questions related to graphs, a mathematical object consisting of a set of nodes with edges connecting certain pairs of them.
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For questions related to the use of a "big M" (large constant) in a mathematical modeling context, either in the objective function (to initialize the simplex method) or in constraints (to formulate l…
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For questions related to the traveling salesman problem (TSP), which seeks, for a given set of nodes, the shortest path that visits every node and returns to the starting node.
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For questions on duals of (primal) mathematical programs that optimize the complementary bound. When minimizing, for example, primal solutions are upper bounds, and dual solutions lower bounds on the …