楼主: heilongjiang
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[问答] ADF检验模型类型的选择理由及原则?协整检验时模型类型的选择方法?谢谢大家帮忙! |
学前班 90%
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回帖推荐waterhorse 发表于3楼 查看完整内容 ADF test is used to test whether a time series is stationary (vs. Alternative Hypothesis: Nonstationary). It is based on an artifical difference equation which can consists of several lags.
Step 1: Model selection (include intercept, deterministic trend, etc). It is an art, you can decide your model by observing the graph first.
Step 2: use Akaki or SBC to decide the number of lags.
Step 3: If ...
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