Vertrieb kontaktieren Describe nonlinear relationships and make predictions from experimental data Nonlinear regression is a statistical technique that helps describe nonlinear relationships in experimental data.
Nonlinear regression models are generally assumed to be parametric, where the model is described as a nonlinear equation. Typically machine learning methods are used for non-parametric nonlinear regression. Parametric nonlinear regression models the dependent variable also called the response as a single equation regression models of a combination of nonlinear parameters and one or more independent variables called predictors.
The model can be univariate single response variable or multivariate multiple response variables.
The parameters can take the form of an exponential, trigonometric, power, or any other nonlinear function. To determine the nonlinear parameter estimates, an iterative algorithm is typically used.
Popular algorithms for fitting a nonlinear single equation regression models include: Gauss-Newton algorithm Gradient descent algorithm Levenberg-Marquardt algorithm For these and other functions for parametric regression as well as for stepwise, robust, univariate, and multivariate regression, see Statistics and Machine Learning Toolbox.
It can be used to: Fit a nonlinear model to data and compare different models Generate predictions Evaluate parameter confidence intervals Evaluate goodness-of-fit For nonparametric models using machine learning techniques such as neural networks, decision trees, and ensemble learning, see Deep Learning Toolbox and Statistics and Machine Learning Toolbox.
To create a model that fits curves, surfaces, and splines to data, see Curve Fitting Toolbox. Examples and How To.