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前向过程噪声问题请教 #3

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shiyu5feng opened this issue Jan 9, 2024 · 4 comments
Open

前向过程噪声问题请教 #3

shiyu5feng opened this issue Jan 9, 2024 · 4 comments

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@shiyu5feng
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您好,最近读到了你们的论文,对你们的工作非常感兴趣。不过论文当中并没有说明前向的扩散过程,所以我在这里有个疑问,前向过程是在哪个张量上加噪声?是选出点进行插值后获得的张量上加噪声吗?

@ZehuaGou
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ZehuaGou commented Jan 9, 2024

没错,是先选出点进行插值,然后在获得的张量上加噪声

@shiyu5feng
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那模型学习的到是不是插值后的数据分布? 如果是这样,那是不是可以选出点后,直接拿插值后的数据与原数据对比进行异常检测?

@ZehuaGou
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ZehuaGou commented Jan 9, 2024

那模型学习的到是不是插值后的数据分布? 如果是这样,那是不是可以选出点后,直接拿插值后的数据与原数据对比进行异常检测?

模型学习的是插值后的数据分布。直接拿插值后的数据和原始数据对比,这种思想包含在了我们的基于密度比选择策略中。如果只采用这种策略,确实有一定效果,但效果相对要差一些

@shiyu5feng
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好的,理解了。谢谢!

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