[R] Is this is correct way to calculate AIC value for time series ?

sagarnikam123 sagarnikam123 at gmail.com
Sat Mar 31 14:23:01 CEST 2012

i want aic value to find best model from AR & ARMA model

i calculate ARMA model via autofit() function from "itsmr" package

when i get aic of AR model,then i will compare with ARMA's  aicc value

is my way logically correct?

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