General Parameter Estimation
Application ID: 86541
This app demonstrates the following:
- Importing measured data from a text file or use built-in functionality for data generation
- Automatically change solver options based on the input
- Dynamically update the equation display
The app can be used to estimate parameters in models without any physics. Data can be imported from a file or the built-in functionality for data generation can be utilized.
The models include linear, quadratic, sigmoid, sloped Gaussian, and a custom model with up to 5 parameters.
The Levenberg-Marquardt solver computes confidence intervals for the estimated parameters, while the other solvers (MMA, SNOPT, and BOBYQA) allow for specification of parameter bounds. MMA and BOBYQA allow for minimization of the maximum square instead of the sum.
This application example illustrates applications of this type that would nominally be built using the following products:
however, additional products may be required to completely define and model it. Furthermore, this example may also be defined and modeled using components from the following product combinations:
The combination of COMSOL® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Particular functionality may be common to several products. To determine the right combination of products for your modeling needs, review the Specification Chart and make use of a free evaluation license. The COMSOL Sales and Support teams are available for answering any questions you may have regarding this.