Displaying 1 result from an estimated 1 matches for "numgrad".
2011 Aug 29
3
gradient function in OPTIMX
Dear R users
When I use OPTIM with BFGS, I've got a significant result without an error
message. However, when I use OPTIMX with BFGS( or spg), I've got the
following an error message.
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> optimx(par=theta0, fn=obj.fy, gr=gr.fy, method="BFGS",
>