How to check convergence of model?

[julietmorris]

Hi Adrian,
I was wondering how do you check whether the model has converged or not? Some other models have that build in and I was wondering if you had any advice or ideas to check that. When running the model my output numbers are pretty strange so I was wondering whether that might be something that I need to address and adjust for.

Thanks in advance,
Juliet

[AdrianHordyk]

No, the package doesn't have anything so sophisticated unfortunately.

You could modify the internal function LBSPRfit to return the full object from the call the optim which may have some useful information re convergence.

If you have any more data than a year or two of length composition data I recommend using the Rapid Conditioning Model (RCM) from the SAMtool package instead of the equilibrium LBSPR approach.

https://samtool.openmse.com/reference/RCM.html

https://openmse.com/tutorial-rcm/

[julietmorris]

Thank you so much! I will try out those options.