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fm貌似实现的有问题 #6

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eonwinner opened this issue Dec 13, 2021 · 1 comment

eonwinner commented Dec 13, 2021

fm的k应该是对于每个特征都用一个k向量表示，而这个代码貌似是样本中所有特征的one-hot 然后concat一起，共同用一个k表示，这相当于是每个样本用一个k向量表示了，感觉有些问题

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jc-LeeHub commented Dec 13, 2021

不懂你说的一个k是什么意思，onehot之后每维特征都对应一个k维隐向量，你思考下V矩阵表达的含义吧。

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