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kwuking avatar kwuking commented on May 28, 2024

问题1:请问图中328行的x_mark = x_mark.repeat(N, 1, 1)有什么作用?

这里是为了处理channel independent操作,因为把输入X的channel维度的N移到了batch上,这里x_mark也需要重复N次对齐;

问题2:请问图中340行x_list = self.pre_enc(x_list) 有什么作用呀?

这里是针对x的输入进行周期趋势的分解,分别进行处理

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HuiziLv avatar HuiziLv commented on May 28, 2024

问题1:请问图中328行的x_mark = x_mark.repeat(N, 1, 1)有什么作用?

这里是为了处理channel independent操作,因为把输入X的channel维度的N移到了batch上,这里x_mark也需要重复N次对齐;

问题2:请问图中340行x_list = self.pre_enc(x_list) 有什么作用呀?

这里是针对x的输入进行周期趋势的分解,分别进行处理

请问您在建模过程中,channel independent是根据效果做出的选择吗?一般来说是0还是1呢?

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1353918285 avatar 1353918285 commented on May 28, 2024

请问这里的channel independent借鉴的是哪篇论文呢

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kwuking avatar kwuking commented on May 28, 2024

请问这里的channel independent借鉴的是哪篇论文呢

请参考patchTST(https://arxiv.org/abs/2211.14730)

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kwuking avatar kwuking commented on May 28, 2024

问题1:请问图中328行的x_mark = x_mark.repeat(N, 1, 1)有什么作用?

这里是为了处理channel independent操作,因为把输入X的channel维度的N移到了batch上,这里x_mark也需要重复N次对齐;

问题2:请问图中340行x_list = self.pre_enc(x_list) 有什么作用呀?

这里是针对x的输入进行周期趋势的分解,分别进行处理

请问您在建模过程中,channel independent是根据效果做出的选择吗?一般来说是0还是1呢?

通常针对具有复杂关系的多元变量,例如PEMS数据集等采用channel dependent;其余场景采用channel independent方案较好;具体可以参考这个论文https://arxiv.org/abs/2304.05206

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HuiziLv avatar HuiziLv commented on May 28, 2024

通常针对具有复杂关系的多元变量,例如PEMS数据集等采用channel dependent;其余场景采用channel independent方案较好;具体可以参考这个论文https://arxiv.org/abs/2304.05206

好的,感谢。如果我想通过变量ABC来预测ABC+D的变化,由于输入没有D,是不是只能选择channel dependent了?

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kwuking avatar kwuking commented on May 28, 2024

通常针对具有复杂关系的多元变量,例如PEMS数据集等采用channel dependent;其余场景采用channel independent方案较好;具体可以参考这个论文https://arxiv.org/abs/2304.05206

好的,感谢。如果我想通过变量ABC来预测ABC+D的变化,由于输入没有D,是不是只能选择channel dependent了?

你好,如果是协变量预测(如上所述,用变量ABC来预测ABC+D的)确实是需要选择channel dependent

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HuiziLv avatar HuiziLv commented on May 28, 2024

你好,如果是协变量预测(如上所述,用变量ABC来预测ABC+D的)确实是需要选择channel dependent

感谢您的耐心回答,对我帮助很大。我没有问题啦~

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