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AMPL A Mathematical Programming Language v2010.11.25 4 Mb
AMPL (an abbreviation of the English. A Mathematical Programming Language Language for MathematicalProgramming) high level programming language developed at Bell Laboratories, in order to describe and solve complex problems of optimization and scheduling theory. AMPLdoes not solve the problem directly, and calls appropriate external solvers (like CPLEX, MINOS, IPOPT, SNOPT, etc.), to obtain solutions. AMPL works with linear andnonlinear optimization problems with discrete or continuous variables. One advantage of AMPL like its syntax mathematical record of optimization problems that allows usto give very short and easy to read the definition of mathematical programming. Many modern solvers available on the server NEOS, take input models for AMPL. AMPL wascreated English. Robert Fourer, Eng. David Gay and Brian Kerniganom.
AMPL is a comprehensive and powerful algebraic modeling language for linear and nonlinearoptimization problems, in discrete or continuous variables.
Developed at Bell Laboratories, AMPL lets you use common notation and familiar concepts to formulateoptimization models and examine solutions, while the computer manages communication with an appropriate solver.
AMPLs flexibility and convenience render it ideal forrapid prototyping and model development, while its speed and control options make it an especially efficient choice for repeated production runs.
Key modelinglanguage features
Broad support for sets and set operators. AMPL models can use sets of pairs, triples, and longer tuples; collections of sets indexed over sets;unordered, ordered, and circular sets of objects; and sets of numbers.
General and natural syntax for arithmetic, logical, and conditional expressions; familiarconventions for summations and other iterated operators.
Nonlinear programming features such as initial primal and dual values, userdefined functions, fast automaticdifferentiation, and automatic elimination of defined variables.
Convenient alternative notations including node and arc declarations for network problems, a specialsyntax for piecewiselinear functions, and columnwise specification of linear coefficients.
Key modeling environment features
Interactive command environmentwith batch processing options. Powerful display commands let you view any model component or expression, browsing onscreen or writing to a file, using automaticformatting or your own preferences.
New looping and ifthenelse commands. Simple programs in the AMPL command language can now be written to solve sequences ofrelated problems, for sensitivity analysis and for decomposition or other iterative schemes.
Separation of model and data. AMPL models remain concise even as setsand data tables grow. Models may incorporate many kinds of conditions for validity of the data.
Interfaces to popular and sophisticated solvers including CONOPT,CPLEX, LAMPS, LANCELOT, LOQO, LSGRG, MINOS, OSL, SNOPT, and XA.
Home:
www.ampl.com/

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