which forecast method seems to be more accurate, MADwma or MADes?
why?
*1) MAD= Mean absolute deviation
2) wma = Weighted moving average
3) es = Exponential smoothing
急問forecasting, 請幫忙列算式, tks
2008-10-03 4:37 am
回答 (2)
2008-10-05 5:13 pm
✔ 最佳答案
I prefer mean absolute deviation (MAD). It is because the MAD of a data set is defined as the mean of the absolute values of the deviations from the mean; that is, the MAD is defined by MAD = Σ∣T - 〒│
n
2008-10-05 09:19:34 補充：
對不起, 公式應是:
MAD = Σ(T - 〒)/ n
T可用X取代
2008-10-06 11:13 am
那是MADwma or MADes作為forecasting會好d?
其實2個也是MAD的
其實2個也是MAD的
收錄日期: 2021-04-19 17:20:50
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081002000051KK01866