I am fairly new to SAS, but Im trying to build a model at work that will identify customers most likely to adopt a new product. We're making the process easily repeatable because we will be doing it monthly for a significant amount of time. My question is if we do this for several years, will the model go "out of tune" without being periodically re-trained with more recent data? If that's the case, should we make it part of our monthly process to train it with updated data? Or do we update it with a data set that has the three most recent month's worth of data? (Running SAS EM 12.3 and EG 6.1)
Any advice would be helpful.
Thanks.
Thanks. I think this does answer my question pretty well. We shouldn't need to re-develop the model unless we know of a significant change happening within the data, or we notice poor model performance.
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