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PPO value function clip #1

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Asuka20 opened this issue Aug 30, 2020 · 0 comments
Open

PPO value function clip #1

Asuka20 opened this issue Aug 30, 2020 · 0 comments

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@Asuka20
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Asuka20 commented Aug 30, 2020

Hi, why do you use maximum instead of minimum to clipping value function loss?
Suppose clippinng occurs, when v_pred_old < v_clipped < v_pred < R, or reversely, the loss will be larger than not clipped. Then why would it works to reduce the variability?
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@Asuka20