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dtheta
2013 Jan 22
1
fdHess function
Your question is better addressed to the R-help@R-project.org mailing list,
which I am copying on this reply.
You are confusing a statistical concept, the Fisher Information matrix,
with a numerical concept, the Hessian matrix of a scalar function of a
vector argument.
The Fisher information matrix is the Hessian matrix of a particular
function at its optimum and I have forgotten whether that