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laglength在哪设置
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Besides my comment above, according to this the maximum lag length can be chosen by rule of a thumb formula: $$ P_{max}=[12.(\frac{T}{100})^{1/4}] $$ See page 121 in the above referenced link: An important practical issue for the implementation of the ADF test is the specification of the lag length p.
@Vitalijs the difference is that apply = TRUE applies the function to the whole subset of the frame. If we have more than 1 variable to lag this is more efficient, because using flag.data.frame means we only need to group/index the data once and can apply the lagging across columns in C++, instead of using lapply with flag.default and re-indexing each time.
The rule is to select the criterion with the lowest value which is the AIC at 26.90693 this is because the lower the value, the better the model.
5 If n ij differs for each element, the structural model is said to have asymmetric lags. The reduced-form VAR representation of this model can be obtained by premultiplying (1) by Φ0 −1 (the inverse of the contemporaneous coefficient matrix). We obtain: (2) β(L) y t = D + e t where β(L) = Φ− Φ(L) 0
文章浏览阅读1.6w次，点赞7次，收藏9次。本文探讨了在人工智能模型如GPT中，MaxTokens（最大令牌数）和ContextLength（上下文长度）的作用与区别。参数调整需考虑任务类型、资源限制和模型性能，以达到输出质量和效率的最佳平衡。建议通过实验确定最适合的应用设置。
最近在学时间序列，但是一直没有弄明白期中的lag到底什么意思?为什么要引入lag呢?在网上也没有查明白。希…
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这几个参数在哪调整..rt，在civitai上复制的参数，后面这几个参数在哪里调整Model hash: a757fe8b3d, Hires steps: 20, Hires upscale: 1.75, Hires up