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captainprice0
Fluorite | Level 6

Hi,

 

I have 5 regressors in the INPUT= and CROSSCORR= function of arima model, which is being iterated from 0 to 5 with the help of do-to loop.

 

when the loop starts from 0,0,0,0,0 for these 5 regressors, all the regressors are getting selected.

 

Is there a way where I can select only 3 or 4 combination of the regressors iteratively.

 

lets say if a,b,c,d,e are my 5 regressors, then at one step I would like to use combination of only 2 of these to run the model,

then move forward to combination of 3, and then 4. 

 

it is like a stepwise selection procedure if I am not wrong?

1 REPLY 1
user24feb
Barite | Level 11

Please note, that there are standard options (ESCAF, MINIC, SCAN for proc arima and BACKSTEP for proc autoreg) to determine the model order automatically.

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