Optimize coefficient for a given custom model


I'm trying to create a temperature model for some experiments with tires based on measured data.

I already have an idea about how the model could look like (non-linear model) and I'm trying to find a way of optimizing the coefficients for this given model.

I find something in this direction in the PMM Lab (http://sourceforge.net/projects/pmmlab/)

but the nodes are too specifically designed to be adapted on my problem and I can't find any node that allow me to define a custom model (math formula with unknown coefficients) to perform a fitting with my data.

Am I missing something ?

Many thanks in advance

You can use the Parameter Optimization Loop nodes and built your custom Math Formula using flow variables for the coefficients. There are examples for the Parameter Optimization Loops on the example server.