LS Optimizer

LS Optimizer is a straightforward and very pragmatic piece of software that helps you determine various parameters of differential equations and other types of other types of complex functions with single or multiple parameters.

It does so with the help of the Levenberg-Marquardt algorithm, also known as the Damped Least-Squares method. That said, the application basically determines the parameters of any given differential equation (the covariance matrix included) only if you provide the solver for the equation in question, as well as an experimental dataset.

To get started, download the app's installer and follow the wizard-based procedure accordingly and, before you launch the app, note that there's a bit of work to be done in the Optimization folder. To be more specific, you are first required to make sure that the "exp.txt" (which contains the experimental dataset), the "LS Optimizer.exe" file and the "solver.exe" file are placed together in the aforementioned folder.

Please note that the experimental dataset must contain between 6 and 97 points and that the so-called solver must be provided by you. In just a few words, creating a solver involves having to change a few lines of its source code. With that out of the way, you're now ready to perform an optimization procedure. Click the File menu, select the Determine Parameters: Optimize entry and fill in the data within the dialog box.

We highly recommend that you take the time to read the included Help manual, easily accessible from the Information menu (look for How to Use LS Optimizer). You will find almost all aspects of the application neatly explained there and, even better, a step-by-step tutorial on how to perform a calculation from start to finish.

Taking everything into account, LS Optimizer is an efficient application that will surely come in handy for users who are looking for a convenient solution for determining differential equation parameters. We admit that LS Optimizer is not exactly a looker, nor is it what you would call a user-friendly application.

However, it does bundle a useful and thoroughly-written Help section which should partially make up for this drawback, even though, it does take a bit of time until you get accustomed to the app's fairly complicated workflow.