search for: baranyi

...ing: I'm fitting sigmoidal models to microbial growth over time. The specific model giving me problems at the moment is only one of a whole class of such models which I need to work with. I specify it here to illustrate that it is not always obvious what the bounds on the parameters are. SSbaranyiBR94<-selfStart( model=function(Time, y0, ymax, mu, lambda, m = 1, v = mu) { #+ # From the paper Baranyi J. & Roberts T. A. (1994). A dynamic approach to predicting bacterial growth in food. Int J. of Fd. Micro. 23. 277-294 # Papers equations (6), (5b), (4b) # eq 4b: y(Time) = y0 + mu...