proc esm data=forecast outfor=output1 print=all; id sas_yyyymm interval=month; forecast TotalSpending; run; proc forecast data=forecast interval=month method=expo weight=0.001 trend=1 out=out outfull outresid outest=est; id sas_yyyymm; var TotalSpending; run; Use the same data set. Use Simple Exponential Smoothing model in ESM and FORECAST. The ESM gave the level weight esitmate=0.001. I plug this as weight in FORECAST. But the predict results from those two procedures are different. Why the same SES with same weight got the different prediction?
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