Lindo LINGO v22.0.139

Lindo LINGO v22.0.139

63.6 MB

LINGO is a comprehensive tool designed to make building and solving Linear, Nonlinear (convex & nonconvex/Global), Quadratic, Quadratically Constrained, Second Order Cone, Semi-Definite, Stochastic, and Integer optimization models faster, easier and more efficient. LINGO provides a completely integrated package that includes a powerful language for expressing optimization models, a full featured environment for building and editing problems, and a set of fast built-in solvers. The recently released LINGO 18.0 includes a number of significant enhancements and new features.

LINGO 22 – New Features:

1) Solvers:

• Simplex solvers increase the average performance on large instances by 25-30%
• MIP (Mixed Integer Program) solvers
• From our standard benchmark suite, the number of models solved to optimality within 2hrs increased by 20% compared to the previous version
• Improved support for external solvers such as COPT, Coin/CLP, Highs
• Global solver has tighter linearizations and relaxations
• Improved Random Number Generator. The `@RAND` and `@QRAND` functions now use a composite of linear congruential generators with a long period for enhanced pseudo-random number generation in the range (0, 1)
• Time to Best in Solution Report. The solution report now includes the Time to Best, the seconds of elapsed time to finding the best solution. This time is frequently << time to prove optimality of the best solution

2) Excel Interface:

• Improvements to the Excel Add-in, so you can better run LINGO models from within an Excel spreadsheet
• Import models directly from Excel into the LINGO editor
• Push edits from LINGO back to Excel
• Faster solution report generation on big models

3) Editor Improvements:

• Double Hints – Quickly access context-sensitive information by double-clicking on sets, attributes, or variables anywhere in your model. Tooltips will display definitions, parent sets, or origin details depending on the element selected
• Adaptive auto-complete capable of suggesting both LINGO methods frequently used words. For more helpful hints enable verbose auto-complete from the right-click menu
• Improved editor UI with larger buttons, line numbers and an option to split model screens

4) Visual Studio Code Add-ins:

• LINGO-LSP(Language Server Protocol in VS (Visual Studio) Code Add-in
• Edit and run LINGO models within Visual Studio Code
• Includes syntax highlighting, auto complete, hover documentation, and a run button with solutions summary
• LINGO Copilot VS (Visual Studio) Code Add-in
• Built on GitHub Copilot, this extension generates LINGO code from natural language or LaTeX descriptions
• Can answer questions about LINGO documentation and generate contextual model comments