Hi, I have to forecast some value of a time series using an ARIMA(5,1,3)
model.

I saw in Matlab there isn't a function for ARIMA models because ARIMA
models are a type of Box-Jenkins models. But how to set parameters?

In the Box-Jenkins models

 m = bj(data,[nb nc nd nf nk])

How to set nb, nc, nd, nf and nk in order to have an ARIMA(p,d,q) model?

Thanks

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