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MMD距离 backward问题 #416

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huangwentao123 opened this issue Oct 22, 2023 · 3 comments
Closed

MMD距离 backward问题 #416

huangwentao123 opened this issue Oct 22, 2023 · 3 comments

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@huangwentao123
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个人理解,MMD距离应该是描述分布的“距离”,而不是分布中单个数据采样点的。
在深度学习里使用,就类似batch size的批处理,从分布中期望做到均匀采样。
但DeepDA下main.py 中line 132 似乎只是单纯个体数据间的距离 loss

这样不会受到采样点的影响吗?还是说任务base model 提取特征后,认为特征在特征空间就是均匀的

@jindongwang
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这个是实现和理想的差异:在深度学习里面只能这么实现。

@wlh-coconut
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wlh-coconut commented Nov 6, 2023 via email

@luhaifeng19947
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luhaifeng19947 commented Nov 6, 2023 via email

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4 participants