Re: [R] Restricting optimisation algorithm's parameter space

2010-04-03 Thread Prof. John C Nash
I have a problem. I am using the NLME library to fit a non-linear model. There is a linear component to the model that has a couple parameter values that can only be positive (the coefficients are embedded in a sqrt). When I try and fit the model to data the search algorithm tries to see if a n

[R] Restricting optimisation algorithm's parameter space in GNLM

2010-04-02 Thread dominikj
Hello, I have a problem. I am using the NLME library to fit a non-linear model. There is a linear component to the model that has a couple parameter values that can only be positive (the coefficients are embedded in a sqrt). When I try and fit the model to data the search algorithm tries t