• Announcing What'sBest 19, LINGO 21 and LINDO® API 15 releases with faster solvers and new features.

    Announcing What'sBest 19, LINGO 21 and LINDO® API 15 releases with faster solvers and new features.

  • What'sBest! 19 - Excel Add-In for Linear, Nonlinear, and Integer Modeling and Optimization

    What'sBest! 19 - Excel Add-In for Linear, Nonlinear, and Integer Modeling and Optimization

  • LINGO 21 - Optimization Modeling Software for Linear, Nonlinear, and Integer Programming

    LINGO 21 - Optimization Modeling Software for Linear, Nonlinear, and Integer Programming

  • LINDO® API 15 - Powerful Library of Optimization Solvers and Mathematical Programming Tools

    LINDO® API 15 - Powerful Library of Optimization Solvers and Mathematical Programming Tools

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  • What'sBest!

    What'sBest! lets you build linear, nonlinear, and integer models in Excel. Models are easy to build and understand using standard spreadsheet equations.


  • LINGO

    LINGO is a comprehensive tool designed to help you build and solve linear, optimization models quickly, easily, and efficiently.

  • LINDO® API

    LINDO® API creates optimization applications. It allows you to plug the power of the LINDO® solver right into customized applications that you have written.
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LINDO Systems is proud to introduce LINGO 21.0. The new features added to LINGO include the following:

ü Improved reproducibility when solving a problem repeatedly, particularly with the concurrent option when solving with fastest of Barrier, Primal simplex, and dual simplex Global solver, improved handling of IF statements and polynomials.
ü New symmetry detection capabilities have been added to the integer (MIP) solver. This may dramatically reduce the time needed to prove optimality on some models with integer variables.
ü Improved Multi-start.
ü Links to many third-party external solvers.
ü Windows: Improved model editor, with the ability to split the edit window into multiple panes.
ü Windows: Auto-completion of common keywords when typing.
ü Windows: Larger toolbar buttons.
ü Windows: Larger Undo Redo buffer with support for more operations.
ü Windows: Faster find and replace method.
ü Windows: Improved Unicode handling.

 

 

 

Announcing  LINDO API 15 (Application Program Interface)

 

   LINDO API 15 is now shipping. You can download a trial version of LINDO API 15 from the LINDO Downloads page. LINDO API is a callable optimization library. It has  substantial improvements to all components of the library, the LP/MIP solvers, Global optimizer, Nonlinear solver, and has greatly enhanced support for external MIP solvers. Most popular MIP solvers can now be plugged in with a simple command.  LINDO API 15  is available on all major platforms: Windows, Linux, MacOS, ARM, Android.

 

   Details:

      +  Improved reproducibility when solving a problem repeatedly, particularly with the concurrent option choosing the fastest of Barrier, Primal simplex, and dual simplex. This is useful if you are trying to debug your application.

      + Global solver, improved handling of IF statements and polynomials. 

          Recognizes the CENSOR( x, LB, UB) construct which is the simplest form of an 

          S-curve function such as might be found in neural networks. 

          Recognizes the POLYNOMIAL construct to 

          better exploit( e.g., local convexity) univariate polynomials.

      + Improved Multi-start for quickly finding good solutions to difficult nonconvex problems,

      + Increased support for external solvers, including linear solvers such as COPT, CLP, HIGHS,

      + Improved support for some external Nonlinear solvers. 

Download the free trial version and check the documentation in the \doc directory to see how to connect to your favorite solver. Note, you must have a valid license to the external solver.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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