Hello,

Inline.

Em 03-07-2012 09:22, Sajeeka Nanayakkara escreveu:
I have already fitted several models
using R code; arima(rates,c(p,d,q))
As I heard, best model produce the
smallest AIC value, but maximum likelihood estimation procedure optimizer
should converge.

How to check whether maximum likelihood estimation procedure optimizer has 
converged or not?

By reading the help page.

?arima

Value

[...]

code    the convergence value returned by _optim_.

Hope this helps,

Rui Barradas

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