Re: [R] 2-parameter MLE problems

2011-04-12 Thread Ben Bolker
Tyler Schartel msstate.edu> writes: > > Hi all, > > Sorry for the re-post, I sent my previous e-mail before it was complete. I > am trying to model seroprevalence using the differential equation: > dP/dt = beta*seronegative*.001*(seropositive)-0.35*(0.999)*(seropositive)- > r*seropositive.

[R] 2-parameter MLE problems

2011-04-12 Thread Tyler Schartel
Hi all, Sorry for the re-post, I sent my previous e-mail before it was complete. I am trying to model seroprevalence using the differential equation: dP/dt = beta*seronegative*.001*(seropositive)-0.35*(0.999)*(seropositive)-r*seropositive. I would like to estimate my two parameters, beta and r, us