ZaccWu / GraphVAE

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GraphVAE

Loss function

AutoEncoder: $\mathcal{L}_{AE}=norm\times[-\log(sigmoid(x))wz-\log(1-sigmoid(x))(1-z)]$

其中$w$是weight,$z$是target,$x$是prediction。

Variational AutoEncoder(对于D维隐变量): $\mathcal{L}{VAE}=\mathcal{L}{AE}-\frac{1}{2\times N_{node}}\times[\sum_D(1+2\log\sigma-\mu^2-\sigma^2)]$

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