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论文的公式4写错了吧，矩阵顺序反了 #147

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Abraham-M97 opened this issue May 16, 2023 · 6 comments
Open

论文的公式4写错了吧，矩阵顺序反了 #147

Abraham-M97 opened this issue May 16, 2023 · 6 comments
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@Abraham-M97
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论文的公式4写错了吧，矩阵顺序反了
image
等式右边的两个矩阵顺序应该反一下
@voldemortX
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@Abraham-M97 感谢指出，你说的好像很有道理，我确认以后在arxiv更新一下

@voldemortX voldemortX added the question Further information is requested label May 16, 2023
@voldemortX
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@Abraham-M97 可能有更严重的错误 #131 我这周仔细看下

@Abraham-M97
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是有更严重的错误，如果不用最小二乘，你应该不是转置而是逆，但是考虑到秩的关系，你应该还是需要用最小二乘的伪逆来算

@voldemortX
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是有更严重的错误，如果不用最小二乘，你应该不是转置而是逆，但是考虑到秩的关系，你应该还是需要用最小二乘的伪逆来算

文章里写错了，代码里是伪逆。但实际上，伪逆也不严谨，如果采样点大量线性相关，可能无法得出正解，应当有一个梯度下降的二次拟合优化作为保险操作。

@voldemortX
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@Abraham-M97 参考 #131 ，应该只是一个论文中的文字错误。感谢指出！我会找个时间更新arxiv版本。

@voldemortX
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@Abraham-M97 arxiv已经更新

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@voldemortX @Abraham-M97