Displaying 1 result from an estimated 1 matches for "taajobian".
2013 Nov 19
2
Optim function & Hessian matrix
Dear R Users
Hi,
I have very emergency problems in my programming about finding MLE
with optim command. I reproduced it with real data. I guess that my
function object in optim is very sensitive because it has power
function .
Then optim give me lower or initial values for estimates with these
warnings for Hessian matrix computation:
1: In log(B2 * (C2^(y + v))) : NaNs produced
2: In log(B3