Re: [R] Using optim with parameters that are factors (instead of continuous parameters)

Ben, Thank you for the incredibly helpful suggestions and links. I've been exploring each over the past few days, and for anyone else's future reference, here's what I've found. (1) I was able to use SANN to specify how to choose new candidate solutions, but I wasn't able to easily use SANN for a

[R] Using optim with parameters that are factors (instead of continuous parameters)

I've been programming maximum likelihood estimation models using the function "optim." My current research requires modeling a particular parameter as a categorical variable (what R calls a "factor"), not as a continuous parameter. (The research question is, at what level of X does a subject in ou