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Can eviews do backcast in ARIMA models?

Posted: Wed Jan 16, 2013 8:05 am
by masxupeng
we know that eviews can do forecast. Can eviews do backcast in ARIMA models? If yes, how can eviews do it? thanks!

Re: Can eviews do backcast?

Posted: Wed Jan 16, 2013 8:21 am
by EViews Gareth
Depends on what you mean by backcast. But in general, you can set the forecast sample to be anything, including periods pre-estimation sample.

Re: Can eviews do backcast?

Posted: Wed Jan 16, 2013 8:25 am
by trubador
If you are referring to dynamic models (e.g. ARIMA), then you'll need a little trick. Since backcasting is essentially a forecasting backwards from the initial point, you can reverse the order of data:

Code: Select all

series rev = @trend sort(d) rev

Re: Can eviews do backcast?

Posted: Wed Jan 16, 2013 8:48 am
by masxupeng
Depends on what you mean by backcast. But in general, you can set the forecast sample to be anything, including periods pre-estimation sample.
i set it. but i could not get backcast outcome with your method of setting the forecast sample to be anything.

Re: Can eviews do backcast?

Posted: Wed Jan 16, 2013 8:50 am
by EViews Gareth
Perhaps you should explain in more detail what you're trying to do.

Re: Can eviews do backcast?

Posted: Wed Jan 16, 2013 8:51 am
by masxupeng
If you are referring to dynamic models (e.g. ARIMA), then you'll need a little trick. Since backcasting is essentially a forecasting backwards from the initial point, you can reverse the order of data:

Code: Select all

series rev = @trend sort(d) rev
thanks a lot! can you recommand some papers for me?

Re: Can eviews do backcast in ARIMA models?

Posted: Wed Jan 16, 2013 8:53 am
by masxupeng
we know that eviews can do forecast . Can eviews do backcast in ARIMA models?? If yes, how can eviews do it? thanks!

Re: Can eviews do backcast?

Posted: Wed Jan 16, 2013 8:57 am
by masxupeng
Perhaps you should explain in more detail what you're trying to do.
backcast in ARIMA models! thanks for your suggestion