spss回归分析之指数平滑法、

Question

13.0版的指数平滑法用的路径是【Analyze】－【Time series】－【exponential smoothing】－【Simple】，我想问的是16.0版怎么做啊？我找来找去都找不到这个路径。。

Answer 1

SPSS软件在发展过程中，将一些功能淘汰掉，例如SPSS Trends 16中，Exponential Smoothing, Autoregression, ARIMA的对话框形式都已经取消；而采用了更灵活的Create Models; Apply Models; Seasonal Decomposition; Spectral Analysis的对话框。
在Analyze->Create Models，中间的method的选第二个，就是exponential smoothing，你可以在criteria中设置model type->simple即可。

现在不能设置alpha值了，只能设置对因变量是否进行转换。
Simple. This model is appropriate for series in which there is no trend or seasonality. Its only
smoothing parameter is level. Simple exponential smoothing is most similar to an ARIMA
model with zero orders of autoregression, one order of differencing, one order of moving
average, and no constant.