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in trainer.py /gen_update(), i cannot understand "encoder is tuned, input is fixed" and "encoder is fixed, input is tuned" #67

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wdf19961118 opened this issue Feb 4, 2021 · 1 comment
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in trainer.py /gen_update(), i cannot understand "encoder is tuned, input is fixed" and "encoder is fixed, input is tuned" #67

wdf19961118 opened this issue Feb 4, 2021 · 1 comment

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@wdf19961118
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@layumi
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layumi commented Feb 13, 2021

Hi @wdf19961118
It is a two-stage strategy. If you are familiar with EM (Expectation Maximization Algorithm), the mechanism is somehow similar.
We can not update input and encoder at the same time, which may lead to the optimisation problems such as overfitting.

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@layumi @wdf19961118