AMPL A Mathematical Programming Language v2014.09.08 英文正式版(數學編程軟體)
AMPL A Mathematical Programming Language 2013.04.08
AMPL是一個全面而強大的線性和非線性優化問題，在離散或連續的變量代數建模語言。 在貝爾實
驗室開發的，AMPL，您可以使用常見的符號和熟悉的概念，制定最優化模型，並研究解決，而計算
機管理通信與相應的解算器。 AMPL的靈活性和便利性使其非常適合快速原型和模型的開發，而它的
速度和控制選項，重複生產運行的一個特別有效的選擇。
主要的建模語言功能
廣泛支持集合和集合操作符。 AMPL模型可以使用組對,三元組集合,和長;集索引在集;無序,命令,和
圓的對象集;組數字。
一般和自然的算術，邏輯和條件表達式的語法，熟悉求和約定其他迭代累加運算符。
如最初的原始和對偶值，用戶自定義的功能，快速自動分化，並自動消除「定義」變量的非線性規劃功能。
方便的替代符號，包括節點和弧聲明的網絡問題，一種特殊的語法分段線性函數的列規格的線性相關係數。
主要的建模環境功能
環境與批處理選項的交互式命令。 強大的顯示命令可以讓你查看任何的模型組件或表達，在屏幕上瀏覽
或寫入到一個文件中，使用自動設置格式或您自己的喜好。
新的循環和IF-THEN-ELSE命令。 AMPL命令語言的簡單程序，現在可以解決一系列相關的問題，進行敏感
性分析和分解或其他迭代計劃。
模型和數據的分離。 AMPL模型保持簡潔，即使集和數據表的增長。 模型可結合許多種情況下的數據的有效性。
流行和先進的求解器，包括CONOPT，CPLEX，燈，LANCELOT，LOQO，LSGRG，MINOS，OSL，SNOPT，和XA接口。
NOTE: Several commercial solvers are also included:
CPLEX, GUROBI, DONLP2, LOQO, LPSOLVE, MINOS, SNOPT.
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AMPL is a comprehensive and powerful algebraic
modeling language for linear and nonlinear
optimization problems, in discrete or continuous
variables.
Developed at Bell Laboratories, AMPL lets you use
common notation and familiar concepts to formulate
optimization models and examine solutions, while the
computer manages communication with an appropriate
solver.
AMPL's flexibility and convenience render it ideal
for rapid prototyping and model development, while
its speed and control options make it an especially
efficient choice for repeated production runs.
Key modeling language 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; familiar
conventions for summations and other iterated
operators.
* Nonlinear programming features such as initial
primal and dual values, user-defined functions,
fast automatic differentiation, and automatic
elimination of "defined" variables.
* Convenient alternative notations including node
and arc declarations for network problems, a
special syntax for piecewise-linear functions, and
columnwise specification of linear coefficients.
Key modeling environment features
* Interactive command environment with batch
processing options. Powerful display commands let
you view any model component or expression,
browsing on-screen or writing to a file, using
automatic formatting or your own preferences.
* New looping and if-then-else commands. Simple
programs in the AMPL command language can now be
written to solve sequences of related problems,
for sensitivity analysis and for decomposition or
other iterative schemes.
* Separation of model and data. AMPL models remain
concise even as sets and 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.
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