Questions tagged [nonlinear]
The nonlinear tag has no usage guidance.
4 questions
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Is there a reasonably simple solution for nonlinear parameter optimization using c++ objects?
I have a problem under the form of a set of 2 ODE that includes 6 free parameters. I need to optimize these parameters based on experimental results.
So far, basically, I have implemented a C++ object ...
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Weights for equidistant samples in power law fitting
I am working on fitting analytical curves to experimental data obtained in real viscoelastic tests (in fact, static creep tests).
The setting of the problem is:
the experimental data I have is a set ...
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Is the Hessian of the strain energy of a hyperelastic material positive definite in general
Is the spatial second derivative of the strain energy of a hyperelastic material positive definite in general?
If this is not a general property of hyperelastic materials are there techniques for ...
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Are there better methods than Levenberg-Marquardt for large-scale nonlinear least squares problems?
I am using Levenberg-Marquardt to solve a nonlinear least squares problem with 16 million residuals and about a million variables. I have a fast matrix vector product for both the Jacobian and its ...
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