On this information, I would guess your code. You did ask!
Nick
On Wed, Dec 12, 2012 at 8:45 PM, Lizzy Zhang <lizzy1230@gmail.com> wrote:
> As I am doing an estimate of coefficients in a nonlinear model using
> MLE, no matter what initial values I set, the results always come back
> to its initial value. Is it more likely that there is something wrong
> with my model, or with my code?
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