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optimft
2008 Jul 29
1
optim fails when using arima
Hi all,
I?m using the arima() function to study a time series but it gives me
the following error:
Error en optim(init[mask], armafn, method = "BFGS", hessian = TRUE,
control = optim.control, :
non-finite finite-difference value [3]
I know that I can change the method of the arima() to "CSS" instead of
"ML" but I'm specially interested in using